The invention discloses a simulation method for microscopic flow of a pre-crosslinked gel suspension liquid in a porous medium. The method comprises the following steps of establishing a porous medium simulation region based on a two-dimensional rock core CT slice image, and performing numerical grid discretization; setting initial positions and original shapes of pre-crosslinked gel particles, and generating virtual boundary marking points; marking the types of numerical grid nodes; calculating action force of a fluid on each virtual boundary marking point according to momentum changes of the numerical grid nodes on the boundaries of the pre-crosslinked gel particles; calculating contact action force on each virtual boundary marking point by adopting a particle contact action model; according to the current shapes and the original shapes of the pre-crosslinked gel particles, calculating bending restoration force and tensile restoration force on each virtual boundary marking point; and based on a Newton second law, calculating velocity and displacement of each virtual boundary marking point, and connecting the virtual boundary marking points to obtain the overall shape and position of the pre-crosslinked gel particles. According to the method, complex porous mediums can be treated and the fluid-solid coupling simulation precision is high; and the method can be used for research on simulation of the microscopic flow of the suspension liquid of elastic particles of pre-crosslinked gel and the like.