Auxiliary propelling device of water quality sampling ship

The invention relates to the technical field of ship propulsion, in particular to an auxiliary propulsion device of a water quality sampling ship. The invention provides a water quality sampling ship auxiliary propulsion device, which comprises a storage casing, protection plates, a propulsion unit, a lifting mechanism and the like, the bottom of the storage casing is rotatably connected with the two protection plates, the propulsion unit comprises a motor I, a rotating shaft I, a protection cover, a bevel gear and a propeller, and the lifting mechanism comprises a motor II, a lifting plate, a screw rod and a guide rod. By means of the lifting mechanism and the protection plate opening and closing assembly, automatic storage of the propelling unit is achieved, the propelling unit can be completely stored in the storage machine shell when not used, the storage machine shell can be flexibly mounted and dismounted on a ship body according to needs, and high configurability is achieved; by arranging the angle adj