The present invention provides an implantable displacement sensing unit. The unit comprises a carrying plate, a displacement sensing module and a data joint; the displacement sensing module is arranged in the carrying plate and is electrically connected with the data joint; and the data joint is connected with the carrying plate through soft plastic. According to the implantable displacement sensing unit, the data joint is employed to access the displacement sensor into a mobile intelligent device to solve the measurement problem of short and micro distances in a small range, and the implantable displacement sensing unit integrates a wireless charging function to avoid the condition that the only one data interface of the mobile intelligent device is occupied to allow charging not to be performed, and is simple in structure, wide in application range and high in practicability.