A novel power divider with adjustable phase difference and power distribution was proposed on the basis of 3 dB S-parameter characteristics of branch directional coupler. The adjustable function was achieved by changing the length of the two horizontal transmission line. When the sum of the electrical lengths of the two horizontal transmission lines of the 3dB branch directional coupler was 180°, the adjustable phase shifters based on the varactor diode were used to replace the two 90° horizontal transmission lines, so two continuous and reconfigurable power dividers were designed. By ADS simulation and layout design, the phase difference of the reconfigurable power divider based on the π type phase shifter was adjustable in the range of 244° while those based on the reflective phase shifter was adjustable in the range of 407°, and their distribution ratio were adjustable in the range of -4.6~11.1 dB (about 11 to 101).