Reasonable nozzle structural parameters are crucial for the desorption performance of walking tracks of deep-sea mining vehicles. Taking the adherent substrate between the walking tracks of the mining vehicles as the research background, numerical simulation of the walking track desorption effect was carried out using Ansys software for the structural parameters and layout design of the nozzles, and the optimal parameters of the nozzles for the desorption of the walking tracks were determined from the calculations and analysis of the velocity of jet impacting on the track teeth and the distribution of the dynamic pressure on the surface of the track plate. The results show that the cavitation effect of the nozzle is very weak when the submerged depth is 5 000 meters, and the design of the nozzle for deep-sea submerged jets may not consider the cavitation effect. Increasing the diameter of the nozzle can significantly increase the length of the core area of the jet. For diameter straight nozzles which are 10 mm, 20 mm and 30 mm, the jet velocity starts to decay rapidly around at 0.09 m, 0.2 m and 0.31 m respectively. The optimal desorption effect of the walking track is achieved when 7 straight nozzles with a diameter of 30 mm and a 90° spray angle are used. Numerical simulation results can provide a strong theoretical basis for the study of the desorption performance of seafloor traveling tracks of deep-sea mining vehicles.