The invention discloses sponge city simulation equipment for city design, and particularly relates to the technical field of city design, the sponge city simulation equipment comprises a mounting rack, the upper part of the mounting rack is fixedly provided with a residential area model, an industrial area model, a government affair area model and a commercial area model, and the top of the mounting rack is provided with a rainfall adjusting mechanism; and four simulated filling mechanisms are mounted at the lower part of the mounting rack. Through the arrangement of the rainfall adjusting mechanism, experimenters can autonomously control the rainfall time and simulate the rainfall magnitude and amplitude, controllability is high, influences of various rainfall conditions with different magnitudes and amplitudes on the ground can be comprehensively evaluated, various types of rainfall runoff results can be obtained, the experiment efficiency is high, the cost is low, practicability is high, and the experimental device is suitable for large-scale popularization and application. Through the arrangement of the simulated filler mechanism, experimenters can perform combined detection on water absorption, water storage, water seepage and water purification effects of various filler soil, an optimal sponge city ground construction scheme is obtained, the experimental function is powerful, and the effect is good.