The invention provides a fabric simulation model building method and system, a storage medium and an electronic device, and the method comprises the steps: obtaining a fabric curved surface at an initial moment, and the fabric curved surface being discretized into quadrilateral grid patches with different sizes according to the difference of material attributes; analyzing the initial coordinates of the gravity center of each quadrilateral grid patch; calculating an initial Riemann degree gauge tensor and an initial Riemann curvature tensor according to the initial coordinates; calculating internal deformation energy according to the Riemannian degree gauge tensor and Riemannian curvature tensor of the current moment in sequence by taking the initial moment as a starting point, and calculating the coordinate position of the gravity center of the next moment in combination with stress analysis; and establishing a fabric simulation motion model according to the coordinate position. According to the method, the fabric is placed in a bent Riemannian manifold space for research, the non-Euclidean geometry theory is adopted, the existing fabric modeling theory and method can be perfected,and the defects that in the Euclidean space, fabric modeling is complex, the convergence speed is low, the stability is poor, and the simulation effect is poor are overcome.