In this paper, a microwave rectifier which based on adaptive power distribution network (APDN) is proposed. The rectifier employs two cells, one suits low input power, and another suits high input power. With APDN, the rectifier has the ability to distribute the RF input, make two rectifier cells operating at suitable input power level. In this way, high RF-DC power conversion efficiency (PCE) could achieve in a wide RF input power range. For validation, the proposed rectifier at 10 GHz is designed. According to the simulation result, with the input power range from 5 dBm to 23 dBm, the PCE is over 50%. The best PCE is found at 16 dBm, which up to 65%.