Current sharing control of parallel operation between power modules is a common problem in practical applications. In view of problems with low current sharing accuracy, poor stability and low anti-interference ability in current sharing control of parallel operation of power modules, a method of current sharing control with voltage loop and double-current-loop is proposed. Output voltage of DC power module is sampled, and the external voltage loop is formed to stabilize the output voltage. Maximum current sharing method is used to control the output current of module and form the external current loop. Main circuit current of each module is connected to the processor through sampling circuit to form the internal current loop. In this way, the accuracy of output current and current sharing can be ensured. Voltage loop and double-current-loop are modulated by the processor, generating PWM to control each DC power module. Through simulation analysis and tests of two 4 000 W prototypes, it is verified that the current sharing method controlled by voltage loop and double-current-loop has the advantages of high current sharing accuracy, good stability and strong anti-interference ability.