Movable radioactive water body monitoring square cabin

The utility model discloses a movable radioactive water body monitoring square cabin which comprises a first cabin door, a sampling combination device and a plurality of cabin walls, the sampling combination device comprises a sampling pipe, a third electromagnetic valve, a cleaning water storage tank, a mechanical pump, a first-stage water tank, a first electromagnetic valve, a first cleaning pump, a first discharge pipe, a first filter, a first peristaltic pump, a second-stage water tank, a second electromagnetic valve, a second discharge pipe, a second cleaning pump, a second filter and a second peristaltic pump; the third electromagnetic valve is provided with two input ends and one output end, and only one input end is selected to be connected with the output end at a certain moment; two ends of the sampling pipe are respectively connected with an external environment water body and one input end of the third electromagnetic valve, and the other input end of the third electromagnetic valve is connected w