The invention relates to a plastic piezoelectric floor. The plastic piezoelectric floor comprises an upper plastic plate body, a middle piezoelectric material layer, a lower electric storage device, a light source, and an electric quantity detection device, wherein the electric storage device is electrically connected with the piezoelectric material layer; the light source is electrically connected with the electric storage device; the electric quantity detection device is used for detecting the electric quantity in the electric storage device; the plastic piezoelectric floor is used for selectively charging electricity to the electric storage device according to the detection result of the electric quantity detection device; a metal net is arranged in the plastic floor body. The plastic piezoelectric floor has the advantages that the structure is novel, the design is optimized, the waterproof and anti-falling effects are realized, the durability and firmness are realized, and the like; the mechanical energy of persons or vehicles or heavy objects on the plastic piezoelectric floor can be reliably and durably sensed in a comprehensive, continuous and automatic way, and the mechanical energy is converted into electric energy.