The invention discloses a loop closing electricity switching detection and control system. The loop closing electricity switching detection and control system comprises a power grid parameter detection module, a switching value detection module, a processor, a communication interface and a loop closing control module. The loop closing time is calculated by the processor according to a preset calculation rule after power grid parameters are acquired by the power grid parameter detection module, when the communication interface receives a loop closing command, the best loop closing time is selected according to the switching value of a loop closing breaker acquired by the switching value detection module to output a loop closing signal, and a loop closing controller controls the loop closing breaker to perform loop closing operation after receiving the loop closing signal. Because the loop closing detection and control detection and control system does not directly perform loop closing operation according to the loop closing command but selects the best loop closing time according to the loop closing command, and thus a large impact current can be avoided, explosion of the breaker, loop protection override trip and other accidents cannot be caused, and power supply reliability of a power distribution network can be guaranteed.