The invention discloses a preparation method of a novel high-hardness ceramic micro-spring material. The preparation method comprises preparation of a silicon nitride material and preparation of a ceramic spring material. The preparation process is free of restraints in materials and molds in existing micro-spring machining techniques, ceramic metal materials are innovatively taken as raw materials, raw material powder is pressed into corresponding micro-spring shapes under high pressure , the hardness and the bending strength of micro-spring products are greatly improved, and the preparation method has better market promotion prospect and economic benefits.