The invention relates to an underwater crawler-type gas shutting pump truck which solves the problems of time and labor wastage and life and property loss of workers in the drainage process due to no drainage plant currently. The underwater crawler-type gas shutting pump truck comprises a bracket, wherein both the left side and the right side of the bracket are respectively provided with driven wheels and drive sprockets; crawlers are arranged between the drive sprockets and the driven wheels at the left and right sides; both drive sprockets are provided with driving mechanisms; the bracket is provided with a tank body the upper end of which is provided with an opening; the bracket in front of the tank body is fixed with a slideway the front side of which is provided with a permanent seat; the permanent seat is provided with an underwater pump and a lifting mechanism; the outlet of the underwater pump is connected with a drain pipe; and the interior of the tank body is provided with an illuminating lamp, a driving operational table and a hydraulic mechanism, and the front wall of the tank body is provided with an anti-explosion observing window. The invention has reasonable structural design; the underwater pump can be moved more conveniently, the maneuverability is strong, and the requirement of adjusting the height of the underwater pump can be realized with no need of disassembling the underwater pump.