The utility model discloses a high -efficient convenient low pressure circuit maintenance spanner, the electric iron comprises a handle, the first wrench end of one side fixedly connected with at handle top to the opposite side swing joint at handle top has the second wrench end, the top of handle is seted up flutedly to the swivelling chute has all been seted up to recessed wall's both sides, the second wrench end is close to one side fixedly connected with fixed plate of handle to the axis that has with swivelling chute looks adaptation is run through to one side that the second wrench end was kept away from to the fixed plate, the standing groove has been seted up to one side of handle. This high -efficient convenient low pressure circuit maintenance spanner has solved the condition that handle structure is single of pulling at present, easy operation, better improvement the flexibility of spanner, satisfied the spanner and can use in the face of the multiple condition, improved the fixity of spanner centre gripping, increased the efficiency of using, need consume a large amount of physical power when having avoided the spanner to use, the better user that has made things convenient for uses.