The invention provides a full-electronic contact fuse tester and a testing method. The full-electronic contact fuse tester comprises an AC-DC power supply, a relay, a voltage converter, a ferroelectric memory, a crystal oscillator, a return circuit, a driving circuit, a single-chip, an indicating lamp, a CPLD and a connector; the single-chip is electrically connected with the voltage converter, the relay, the indicating lamp and the CPLD; the AD-DC power supply is electrically connected with the voltage converter and the relay; the CPLD is electrically connected with the driving circuit, the single-chip and the connector; and the connector is electrically connected with the relay. The full-electronic contact fuse tester can send out at most eight ways of trigger signals, so that a triggersignal processing module of contact fuses is detected; and needed trigger state signals are provided to the contact fuses with multiple sensors, so that the contact fuses can be tested more comprehensively.