Adsorption reaction is the important behavior taken place when ammonia nitrogen enters soil,and. directly influences the dispercal law of ammonia nitrogen in groundwater.Combined north groundwater temperature ,the paper took silk clay,fine sand and coarse sand in Fuxin region for example,and respectively studied the dynamic behavior of ammonia nitrogen adsorption soil adsorption of three types of soil at 5,10,15,20℃. The experimental results show that at the temperature of 5 to 20 centigrade,the lower the temperature, the smaller the particle diameter, the greater the amount of adsorption of ammonia nitrogen in three soils;the dynamics process of sandy clay and fine sand at 5,10,15,20℃ and coarse sand at the temperature of 10,15,20℃ conform to the secondary dynamic model.The adsorption kinetics of coarse sand conform to the first-order kinetic model at the temperature of 5℃, their adsorption process belongs to chemical adsorption.The rate-limiting step of fine and coarse sand at the temperature of 5,10,15,20℃ is intraparticle diffusion.