The invention provides ship-borne missile power supply equipment. The ship-borne missile power supply equipment comprises a first AC-DC module which is used for acquiring and converting a line voltagebetween a phase-a line and a phase-b line in a ship-borne three-phase three-wire alternating current into a direct voltage, a second AC-DC module is used for acquiring and converting a line voltage between the phase-a line and a phase-c line in the ship-borne three-phase three-wire alternating current into a direct voltage, a third AC-DC module which is used for acquiring and converting a line voltage between the phase-b line and the phase-c line in the ship-borne three-phase three-wire alternating current into a direct voltage, a bus which is connected with the output ends of the first AC-DCmodule, the second AC-DC module and the third AC-DC module, and a plurality of DC power supply modules which are connected with the bus at the input ends and are used for outputting a direct currentrequired by a ship-borne missile. According to the invention, three-phase balance of the ship-borne load is realized, the outputs of the DC power supply modules do not influence one another, the powerconsumption is low, the ignition modules are connected to a grid in a redundant manner, and the reliability of ship-borne missile power supply launching is improved.