Abstract-This paper designs a security system for warehouse's security. Based on linux and S 3C2440, this system's peripheral devices include temperature sensors, humidity sensors, cameras, web clients, Android clients, fans, and led. It uses the temperature sensor to monitor the temperature and fire, uses camera to real-time monitor whether there are unsafe factors. If the system detects that the room temperature is too high or too low, i t will automatically alarm the security staff and automatically open the fan. Through the camera real-time monitoring, the security staff might be suspicious persons or has unexpected events in the warehouse. The video surveillance also will capture real-time video data and transfer data to Android client, then security personnel will control the security information whenever and wherever if they need. If the warehouse breaks out of fire, thief, accident, and so on, this system will take automatic protective measures, capture video evidence, and warn the security staff. Finally, if the warehouse has an accident, the system will reduce the damage to the lowest.