An electric power socket control system comprises a cloud server, a wireless network sharer, at least an electric power socket device including a wireless network interface circuit and an electric quantity detection circuit, and a handheld device, wherein the electric power socket device can connect to the cloud server through the wireless network of the wireless network sharer and receive instructions for controlling the electric power socket device via the cloud server. In addition, the handheld device includes a built-in control software allowing to connect to the cloud server, in which the control software can be used to build the basic data of the electric power socket device and further select that, during a time interval, the system can perform power supply/power break operations to the electric power socket device automatically and randomly at non-fixed time.