An integrated circuit with a separable electric leakage circuit and a prepayment circuit includes a power module, an electric leakage detection module and a prepayment delay breaking module, wherein the power module includes a two-stage step type surge absorption loop, a rectification loop and a release electric leakage detection module; the electric leakage detection module is connected with the power module through a switch, the electric leakage detection module includes an electric leakage signal sorting circuit and an electric leakage detection control circuit, and the electric leakage sorting circuit includes a glass-sealed bidirectional trigger diode used for absorbing surge current; and the prepayment delay breaking module is connected with the input end of a prepayment electricity meter, and includes a charging circuit, a discharging circuit and a delay breaking circuit. The two-stage step type surge absorption loop absorbs surge voltage, the glass-sealed bidirectional trigger diode absorbs surge current, the switch controls and selects electric leakage and prepayment functions, and the charging and discharging circuits of the prepayment delay breaking module realize high-precision delay breaking, thereby realizing improvement of an anti-interference capability of a breaker while electric leakage and prepayment functions are achieved in the same breaker, and facilitating selection of a user.