The utility model relates to an inhale mud device under water, including inhaling mud pipe and gas injection pipe. It submarinely supplies entry that muddy water got into and is located the export that the upper end let muddy water flow including being used for stretching into to inhale mud pipe, gas injection manages the end of giving vent to anger including being used for the inlet end of connecting with high pressurized air source and supplying the high -pressure gas outflow. The end of giving vent to anger is introduced it is intraductal to inhale mud, just the opening of holding of giving vent to anger deviates from the entry direction, let high -pressure gas to when the export is flowed the entry position forms the negative pressure, makes extra -oral muddy water to be sucked. The mud intraduct of inhaling of inhaling the entrance of mud pipe produces great negative pressure, and impressing the mud mixture on the sea bed to, to inhale mud intraductal to it discharges from the export of inhaling the mud pipe to follow highly -compressed air. So ceaselessly gas injection reaches the purpose of inhaling mud through siphon principle. It is light to inhale mud device simple structure, convenient operation, can by the diver at underwater operation, siphon away submarine mud, the cost of inhaling mud is lower, that can also go on becoming more meticulous inhales the mud operation.