Underwater space mining device

The invention discloses an underwater space mining device.The underwater space mining device comprises a rack, a conveyor, a mining head installed on a rack and a conveying pipe used for connecting the conveyor and the mining head.The rack is provided with a buoyancy component enabling the underwater space mining device to keep a suspending state underwater and a feed mechanism used for driving the underwater space mining device to move underwater.The underwater space mining device has the advantages of being simple in structure, flexible in movement, good in terrain application and the like.