Since the power combining efficiency of branch line coupler will be affected by the phase difference of the input powers, it is connected to the 3 dB Wilkinson power divider by the π type circuit with varactor to realize the redistribution to the output power of the power divider. By adjusting the bias voltage of the varactor, the equivalent electric length of π type circuit can be changed to achieve phase difference, and the distribution ratio of the power divider can be changed. Based on this principle, two reconfigurable power dividers at 2.5 GHz are designed by using ADS software, the distribution ratio can be adjusted continuously in the range of 0~25 dB (about 1∶1~300∶1) and -15.5~15.5 dB (about 1∶35~35∶1) respectively, and the return loss and isolation of the output port are better than 20 dB. The proposed power divider can be used for the realtime power distribution and synthesis in RF and microwave systems.