The invention discloses a pressure-sensitive shape memory material and a preparation method thereof. With PU sponge serving as an elastic phase of the shape memory material and a paraffin and stearic acid mixture attached to the inner wall of the PU sponge serving as a variable phase, the pressure-sensitive shape memory material is formed. The preparation method includes the following steps that 1, the PU sponge is cut into a proper size as needed and then preheated for 1 h in a 110 DEG C oven; 2, the sponge in the oven is taken out and put into prepared mixed liquor for full absorption, the sponge is compressed to the length 30%-70% the original length after complete absorption, and the pressure-sensitive shape memory material is obtained after petroleum ether volatilizes. Compared with an existing shape memory material, according to the porous pressure-sensitive shape memory material, the preparation process is simple, reaction conditions are mild, raw materials are cheap, industrial production is easy to achieve, and the porous pressure-sensitive shape memory material has broad application prospects in the field of shape memory.