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The invention relates to a hand rehabilitation training and signal acquisition device integrated with a piezoelectric spring. The hand rehabilitation training and signal acquisition device comprises a wrist strap, a data acquisition unit, the piezoelectric spring, a finger elastic strap and a wireless communication unit, the data acquisition unit is fixed on the wrist strap, one end of the piezoelectric spring is mounted on the wrist strap, and the other end is connected with the finger elastic strap; the piezoelectric spring comprises a piezoelectric fiber and an elastic layer, the piezoelectric fiber is of a spiral structure, the elastic layer is packaged on the outer side of the piezoelectric fiber in the axial direction of the spiral structure, the piezoelectric fiber is electrically connected with the data acquisition unit, and the data acquisition unit converts charge changes of the piezoelectric spring into electric signals and transmits the electric signals to a terminal through the wireless communication unit. Compared with the prior art, the piezoelectric fiber spiral structure is adopted, the elastic layer is used for packaging, elastic supporting and signal collecting are integrated, real-time, objective and quantitative monitoring of hand rehabilitation training data can be achieved, and data support is provided for rehabilitation evaluation individuation and treatment remote.