The invention discloses high-molecular temperature-sensing-discoloration synthetic leather. The high-molecular temperature-sensing-discoloration synthetic leather comprises a basic layer, grooves areformed in the top and the bottom of the basic layer, the insides of the grooves are filled with fungi-proofing agents, first PU layers are fixedly connected to the top and the bottom of the basic layer, second PU layers are fixedly connected to one opposite sides of the first PU layers, sponge blocks are fixedly connected to one opposite sides of the second PU layers, rubber layers are fixedly connected to one opposite sides of the sponge blocks, the portions between the rubber layers and the second PU layers are filled with fillers located on the outer sides of the sponge blocks, open holes are formed inside the rubber layers, temperature-sensing-discoloration layers are fixedly connected to one opposite sides of the rubber layers, and surface layers are fixedly connected to one oppositesides of the temperature-sensing-discoloration layers. The high-molecular temperature-sensing-discoloration synthetic leather is simple in whole structure, the aim of temperature sensing discolorationof the synthetic leather is achieved, the fast-changing aethestic standard of a user can be effectively adapted accordingly, the practicability of the synthetic leather is improved, the using beautiful degree of the synthetic leather is increased, and using is convenient.