The utility model discloses a microwave power supply distribution system for for many parallel combination's miniwatt microwave power supply delivery electric energy, it includes electric wire netting input process unit and a plurality of distribution branch road, wherein, electric wire netting input process unit is connected with the electric wire netting for alternating current to the electric wire netting input carries out centre pressure regulating, rectification and post -filter, output direct current, electric wire netting input process unit is connected to distribution branch road one end, and the magnetron is connected to the other end for transmit the direct current of electric wire netting input process unit output to the magnetron of each miniwatt microwave power supply, make the magnetron carry out power output. The utility model discloses not only reduce electric wire netting harmonic and power output ripple, still improved power factor and the galvanic quality of output, still reduced the input of rectifier filter spare simultaneously, reduced system's cost, and then reduced power supply size, saved installation space.