A step-type stacked chip packaging structure based on a resin spacer that includes: a plastic packaging material, a circuit board, a resin spacer, a first chip, a second chip and an electrical connection assembly. The resin spacer, the first chip, and the second chip are stacked on the circuit board respectively. The second chip is stacked on the first chip in a stepped manner. The circuit board, the first chip and the second chip are electrically connected together through the electrical connection assembly. The resin spacer uses a fiber glass fabric as its base material, a weight percent of the fiber glass fabric is 10-60 wt %, and the following components are attached to the fiber glass fabric as a percentage by the total weight of the resin spacer: 8-40 wt % of epoxy resin, 10-30 wt % of quartz powder, 2-10 wt % of aluminum oxide, 1-8 wt % of calcium oxide, and 1-8 wt % of curing agent.