The invention relates to a 10-20kV box-type transformer power supply intelligent control device, which comprises a signal data acquiring circuit, a signal data computing and judging circuit, a device operation circuit and a control and alarm communication circuit, wherein the signal data acquiring circuit acquires signal data from a box-type transformer power supply device, an output end head of the signal data acquiring circuit is connected with the signal data computing and judging circuit as well as the control and alarm communication circuit, an output end of the signal data computing andjudging circuit is connected with the device operation circuit as well as the control and alarm communication circuit, and the control and alarm communication circuit is connected to a distribution network intelligent control center or an electrician cell phone. According to the invention, a real-time state, data detection, protection and remote control system of a 400V electric distribution system used for a box-type transformer and a load switch is developed by a computer technology, a monitoring technology, a control technology and a communication technology, and plays an active role in promoting the development of electric distribution intellectualization.