The invention discloses a carrier phase-shift modulation method for a medium voltage hybrid modular multilevel converter. The medium voltage hybrid modular multilevel converter comprises: a DC power,a converter main circuit, a load, a data acquisition module, a given input module, a PID controller, and a drive module. The carrier phase-shift modulation method comprises calculating a carrier phaseangle of each bridge arm, calculating a reference voltage, and generating a driving control signal. According to the carrier phase-shift modulation method for the medium voltage hybrid modular multilevel converter, the invention is suitable for the field of medium voltage DC electric energy conversion, the number of output voltage levels can be increased, and output waveform harmonics can be smaller when the number of bridge arm sub-modules is small, the cost of a hybrid modular topology with full bridge and half bridge sub-modules is saved and DC fault blocking capability of the converter isincreased.