diff --git a/src/main/kotlin/top/fatweb/api/FatWebApiApplication.kt b/src/main/kotlin/top/fatweb/api/FatWebApiApplication.kt
index 9a5f335..5dda1ea 100644
--- a/src/main/kotlin/top/fatweb/api/FatWebApiApplication.kt
+++ b/src/main/kotlin/top/fatweb/api/FatWebApiApplication.kt
@@ -3,6 +3,7 @@ package top.fatweb.api
 import org.slf4j.LoggerFactory
 import org.springframework.boot.autoconfigure.SpringBootApplication
 import org.springframework.boot.runApplication
+import org.springframework.scheduling.annotation.EnableScheduling
 import org.springframework.transaction.annotation.EnableTransactionManagement
 import java.io.File
 import java.util.*
@@ -15,6 +16,7 @@ import java.util.*
  */
 @SpringBootApplication
 @EnableTransactionManagement
+@EnableScheduling
 class FatWebApiApplication
 
 /**
diff --git a/src/main/kotlin/top/fatweb/api/cron/StatisticCron.kt b/src/main/kotlin/top/fatweb/api/cron/StatisticCron.kt
new file mode 100644
index 0000000..d22e6e9
--- /dev/null
+++ b/src/main/kotlin/top/fatweb/api/cron/StatisticCron.kt
@@ -0,0 +1,23 @@
+package top.fatweb.api.cron
+
+import org.springframework.scheduling.annotation.Scheduled
+import org.springframework.stereotype.Component
+import top.fatweb.api.entity.system.StatisticLog
+import top.fatweb.api.properties.SecurityProperties
+import top.fatweb.api.service.system.IStatisticLogService
+import top.fatweb.api.util.RedisUtil
+
+@Component
+class StatisticCron(
+    private val redisUtil: RedisUtil,
+    private val statisticLogService: IStatisticLogService
+) {
+    @Scheduled(cron = "0 * * * * *")
+    fun onlineUserCount() {
+        statisticLogService.save(StatisticLog().apply {
+            key = StatisticLog.KeyItem.ONLINE_USERS_COUNT
+            value = redisUtil.keys("${SecurityProperties.jwtIssuer}_login_*")
+                .distinctBy { Regex("FatWeb_login_(.*):.*").matchEntire(it)?.groupValues?.getOrNull(1) }.size.toString()
+        })
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/top/fatweb/api/entity/system/EventLog.kt b/src/main/kotlin/top/fatweb/api/entity/system/EventLog.kt
new file mode 100644
index 0000000..5d28307
--- /dev/null
+++ b/src/main/kotlin/top/fatweb/api/entity/system/EventLog.kt
@@ -0,0 +1,64 @@
+package top.fatweb.api.entity.system
+
+import com.baomidou.mybatisplus.annotation.EnumValue
+import com.baomidou.mybatisplus.annotation.TableField
+import com.baomidou.mybatisplus.annotation.TableId
+import com.baomidou.mybatisplus.annotation.TableName
+import com.fasterxml.jackson.annotation.JsonFormat
+import com.fasterxml.jackson.annotation.JsonValue
+import java.io.Serializable
+import java.time.LocalDateTime
+
+/**
+ * Event log entity
+ *
+ * @author FatttSnake, fatttsnake@gmail.com
+ * @since 1.0.0
+ */
+@TableName("t_event_log")
+class EventLog : Serializable {
+    enum class Event(@field:EnumValue @field:JsonValue val code: String) {
+        LOGIN("LOGIN"), LOGOUT("LOGOUT"), REGISTER("REGISTER"), API("API")
+    }
+
+    /**
+     * ID
+     *
+     * @author FatttSnake, fatttsnake@gmail.com
+     * @since 1.0.0
+     */
+    @TableId("id")
+    var id: Long? = null
+
+    /**
+     * Event
+     *
+     * @author FatttSnake, fatttsnake@gmail.com
+     * @since 1.0.0
+     */
+    @TableField("event")
+    var event: Event? = null
+
+    /**
+     * Operate user ID
+     *
+     * @author FatttSnake, fatttsnake@gmail.com
+     * @since 1.0.0
+     */
+    @TableField("operate_user_id")
+    var operateUserId: Long? = null
+
+    /**
+     * Operate time
+     *
+     * @author FatttSnake, fatttsnake@gmail.com
+     * @since 1.0.0
+     */
+    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss.SSS")
+    @TableField("operate_time")
+    var operateTime: LocalDateTime? = null
+
+    override fun toString(): String {
+        return "EventLog(id=$id, event=$event, operateUserId=$operateUserId, operateTime=$operateTime)"
+    }
+}
diff --git a/src/main/kotlin/top/fatweb/api/entity/system/StatisticLog.kt b/src/main/kotlin/top/fatweb/api/entity/system/StatisticLog.kt
new file mode 100644
index 0000000..1ea02cd
--- /dev/null
+++ b/src/main/kotlin/top/fatweb/api/entity/system/StatisticLog.kt
@@ -0,0 +1,64 @@
+package top.fatweb.api.entity.system
+
+import com.baomidou.mybatisplus.annotation.EnumValue
+import com.baomidou.mybatisplus.annotation.TableField
+import com.baomidou.mybatisplus.annotation.TableId
+import com.baomidou.mybatisplus.annotation.TableName
+import com.fasterxml.jackson.annotation.JsonFormat
+import com.fasterxml.jackson.annotation.JsonValue
+import java.io.Serializable
+import java.time.LocalDateTime
+
+/**
+ * Statistic log entity
+ *
+ * @author FatttSnake, fatttsnake@gmail.com
+ * @since 1.0.0
+ */
+@TableName("t_statistic_log")
+class StatisticLog : Serializable {
+    enum class KeyItem(@field:EnumValue @field:JsonValue val code: String) {
+        ONLINE_USERS_COUNT("ONLINE_USER_COUNT")
+    }
+
+    /**
+     * ID
+     *
+     * @author FatttSnake, fatttsnake@gmail.com
+     * @since 1.0.0
+     */
+    @TableId("id")
+    var id: Long? = null
+
+    /**
+     * Key
+     *
+     * @author FatttSnake, fatttsnake@gmail.com
+     * @since 1.0.0
+     */
+    @TableField("key")
+    var key: KeyItem? = null
+
+    /**
+     * Value
+     *
+     * @author FatttSnake, fatttsnake@gmail.com
+     * @since 1.0.0
+     */
+    @TableField("value")
+    var value: String? = null
+
+    /**
+     * Record time
+     *
+     * @author FatttSnake, fatttsnake@gmail.com
+     * @since 1.0.0
+     */
+    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss.SSS")
+    @TableField("record_time")
+    var recordTime: LocalDateTime?= null
+
+    override fun toString(): String {
+        return "StatisticLog(id=$id, key=$key, value=$value, recordTime=$recordTime)"
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/top/fatweb/api/mapper/system/EventLogMapper.kt b/src/main/kotlin/top/fatweb/api/mapper/system/EventLogMapper.kt
new file mode 100644
index 0000000..11177ba
--- /dev/null
+++ b/src/main/kotlin/top/fatweb/api/mapper/system/EventLogMapper.kt
@@ -0,0 +1,8 @@
+package top.fatweb.api.mapper.system
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper
+import org.apache.ibatis.annotations.Mapper
+import top.fatweb.api.entity.system.EventLog
+
+@Mapper
+interface EventLogMapper : BaseMapper<EventLog>
\ No newline at end of file
diff --git a/src/main/kotlin/top/fatweb/api/mapper/system/StatisticLogMapper.kt b/src/main/kotlin/top/fatweb/api/mapper/system/StatisticLogMapper.kt
new file mode 100644
index 0000000..a970d8e
--- /dev/null
+++ b/src/main/kotlin/top/fatweb/api/mapper/system/StatisticLogMapper.kt
@@ -0,0 +1,8 @@
+package top.fatweb.api.mapper.system
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper
+import org.apache.ibatis.annotations.Mapper
+import top.fatweb.api.entity.system.StatisticLog
+
+@Mapper
+interface StatisticLogMapper : BaseMapper<StatisticLog>
\ No newline at end of file
diff --git a/src/main/kotlin/top/fatweb/api/service/system/IEventLogService.kt b/src/main/kotlin/top/fatweb/api/service/system/IEventLogService.kt
new file mode 100644
index 0000000..481c946
--- /dev/null
+++ b/src/main/kotlin/top/fatweb/api/service/system/IEventLogService.kt
@@ -0,0 +1,6 @@
+package top.fatweb.api.service.system
+
+import com.baomidou.mybatisplus.extension.service.IService
+import top.fatweb.api.entity.system.EventLog
+
+interface IEventLogService : IService<EventLog>
\ No newline at end of file
diff --git a/src/main/kotlin/top/fatweb/api/service/system/IStatisticLogService.kt b/src/main/kotlin/top/fatweb/api/service/system/IStatisticLogService.kt
new file mode 100644
index 0000000..4ad89b1
--- /dev/null
+++ b/src/main/kotlin/top/fatweb/api/service/system/IStatisticLogService.kt
@@ -0,0 +1,6 @@
+package top.fatweb.api.service.system
+
+import com.baomidou.mybatisplus.extension.service.IService
+import top.fatweb.api.entity.system.StatisticLog
+
+interface IStatisticLogService : IService<StatisticLog>
\ No newline at end of file
diff --git a/src/main/kotlin/top/fatweb/api/service/system/impl/EventLogServiceImpl.kt b/src/main/kotlin/top/fatweb/api/service/system/impl/EventLogServiceImpl.kt
new file mode 100644
index 0000000..b1e20d0
--- /dev/null
+++ b/src/main/kotlin/top/fatweb/api/service/system/impl/EventLogServiceImpl.kt
@@ -0,0 +1,12 @@
+package top.fatweb.api.service.system.impl
+
+import com.baomidou.dynamic.datasource.annotation.DS
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl
+import org.springframework.stereotype.Service
+import top.fatweb.api.entity.system.EventLog
+import top.fatweb.api.mapper.system.EventLogMapper
+import top.fatweb.api.service.system.IEventLogService
+
+@DS("sqlite")
+@Service
+class EventLogServiceImpl : ServiceImpl<EventLogMapper, EventLog>(), IEventLogService
\ No newline at end of file
diff --git a/src/main/kotlin/top/fatweb/api/service/system/impl/StatisticLogServiceImpl.kt b/src/main/kotlin/top/fatweb/api/service/system/impl/StatisticLogServiceImpl.kt
new file mode 100644
index 0000000..479b142
--- /dev/null
+++ b/src/main/kotlin/top/fatweb/api/service/system/impl/StatisticLogServiceImpl.kt
@@ -0,0 +1,12 @@
+package top.fatweb.api.service.system.impl
+
+import com.baomidou.dynamic.datasource.annotation.DS
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl
+import org.springframework.stereotype.Service
+import top.fatweb.api.entity.system.StatisticLog
+import top.fatweb.api.mapper.system.StatisticLogMapper
+import top.fatweb.api.service.system.IStatisticLogService
+
+@DS("sqlite")
+@Service
+class StatisticLogServiceImpl : ServiceImpl<StatisticLogMapper, StatisticLog>(), IStatisticLogService
\ No newline at end of file
diff --git a/src/main/resources/db/migration/sqlite/V1_0_0_231213__Add_table_'t_event_log'.sql b/src/main/resources/db/migration/sqlite/V1_0_0_231213__Add_table_'t_event_log'.sql
new file mode 100644
index 0000000..a2b97a6
--- /dev/null
+++ b/src/main/resources/db/migration/sqlite/V1_0_0_231213__Add_table_'t_event_log'.sql
@@ -0,0 +1,9 @@
+drop table if exists t_event_log;
+
+create table if not exists t_event_log -- 事件日志表
+(
+    id bigint not null primary key,
+    event varchar(50) not null, -- 事件,
+    operate_user_id bigint not null, -- 操作用户
+    operate_time datetime not null default (strftime('%Y-%m-%d %H:%M:%f','now')) -- 操作时间
+);
\ No newline at end of file
diff --git a/src/main/resources/db/migration/sqlite/V1_0_0_231214__Add_table_'t_statistic'.sql b/src/main/resources/db/migration/sqlite/V1_0_0_231214__Add_table_'t_statistic'.sql
new file mode 100644
index 0000000..423ce81
--- /dev/null
+++ b/src/main/resources/db/migration/sqlite/V1_0_0_231214__Add_table_'t_statistic'.sql
@@ -0,0 +1,9 @@
+drop table if exists t_statistic_log;
+
+create table if not exists t_statistic_log -- 统计日志表
+(
+    id          bigint       not null primary key,
+    key         varchar(50)  not null,                                               -- 记录键
+    value       varchar(100) not null,                                               -- 记录值
+    record_time datetime     not null default (strftime('%Y-%m-%d %H:%M:%f', 'now')) -- 记录时间
+)
\ No newline at end of file