The utility model provides an outdoor arrester state detecting system, include: install respectively in the outdoor arrester of each phase line department of a plurality of wire poles, every outdoor arrester includes: be used for the storage the memory cell of the at least a parameter information of outdoor arrester, and be used for with the wireless information interaction unit that at least a parameter information outwards sent, detection device is used for receiving wireless information interaction unit sends at least a parameter information to send to external equipment. The utility model discloses be favorable to realizing automation, the intellectuality of the outdoor arrester work of patrolling and examining, saved manpower resources greatly, improved the scene of outdoor arrester and patrolled and examined efficiency.