The invention discloses a simulation method of a swelling soil moisture movement process, and relates to the field of soil hydrodynamics. The simulation method specifically comprises the following steps: 1) adopting a principle of conservation of mass to put forward the simulation method of the swelling soil moisture movement process; 2) putting forward a calculation method of a swelling soil moisture movement parameter, wherein the calculation of the swelling soil moisture movement parameter comprises the unsaturated coefficient of transmissibility, the specific volume and the like of the swelling soil. The simulation method is favorable for perfecting a soil moisture movement theory, and has a certain guidance value for the moisture management as well as regulation and control of a swelling soil distribution area.