The invention discloses a shift register and a precharge circuit which comprises a receiving module, a boot module and a reset module. The receiving module, according to a control signal, receives a driving signal received by the precharge circuit and outputs the driving signal to the boot module. The reset module is coupled between the receiving module and the boot module for receiving a reset signal in order to reset the precharge signal. The precharge circuit of the invention is not affected by technology, which ensures that the shift register of the precharge circuit in the invention has better driving force.