In view of the problem that the current adaptive reclosing scheme for active distribution networks recloses after an inherent delay upon identifying the disappearance of faults，without considering whether the accompanying arc is completely extinguished，an adaptive reclosing strategy for active distribution networks considering secondary arc was proposed.Firstly，measurement points were set at the circuit breaker of the faulted line and the new energy outlet，and the reclosing and new energy off-grid operations were realized without interconnection communication according to the in-situ measured quantities of the two locations.Secondly，a secondary arc model of the distribution network was established，and arc characteristics were analyzed in depth.According to the time-varying nature of arc resistance，variation rules of measured impedance phase angle and total harmonic distortion （THD） during the period from secondary arc to recovery voltage were obtained，and action strategies of circuit breakers at different measurement points were derived by comprehensively synthesizing dual criteria.Simulation results prove that this criterion can reliably perform the reclosing operation according to the arc-extinguishing moment，and is not affected by factors such as fault type，fault location，transition resistance，and noise.