Coastal marine geological survey experiment vehicle, the truck box is used as the experimental vehicle, the chassis is equipped with water tanks (1) placed on both sides, there are connecting conduits between the water tanks, the interior of the vehicle box is equipped with instrument racks and test benches, and the door of the box is equipped with electric Hydraulic lifting platform (6). Laboratory equipment includes sea and land positioning system, dual-frequency echo sounder, sea water level, wave, water depth measuring instrument, temperature, salinity, density measurement system, flow velocity, flow direction, sand content measurement, seabed scanner, stratum structure Detection, gravity drilling, mud detector, and experimental equipment are fixed between the layers of the instrument rack with luggage fixing straps, and computers and office conditions are installed at the corners of the carriage. The invention provides a compact mobile laboratory with relatively perfect working conditions, which can meet the needs of shallow seas, tidal flats, land, and islands involving marine hydrology, marine topography, sedimentation, and bottom formations, and seawater and floating mud samples can be collected on site in a timely manner. test.