The invention discloses a three-phase adaptive reclosing method utilizing parallel reactor mode current frequency characteristics. After line fault tripping, different phase-mode transformation matrixes are selected according to fault phase selection results to convert a phase system to a mode system for analysis; the fault property discrimination start time is the time when a power frequency component can not be detected in a parallel reactor mode current; within the discrimination time, permanent faults and instant faults are distinguished according to parallel reactor 1-mode, 2-mode and 0-mode current oscillation frequency characteristics. The method is advantaged in that fault properties are identified before three-phase reclosing, reclosing is not carried out if a fault is determined to be the permanent fault, so secondary impact caused by reclosing the permanent fault to the system and equipment can be avoided.