The utility model discloses a zero adjuster of double oil cylinder connecting rods on the hydraulic continuous wall grab, which comprise a grab framework, the zero adjustment mechanism of double oil cylinder connecting rods for adjusting the grab body on zero position is arranged on the top cover frame of the grab, the grab has a upper-frame (12) on upper end of framework, a under-frame (13) under the upper-frame and a pair of push plate support(19), the push plate support is arranged at both ends of the upper-frame and under-frame, the upper ends are separately connected with the upper-frame, the lower ends are free ends and form a quadrangle, lower pin shaft (16) of under-frame and upper pin shaft (15) beneath upper-frame are provided with two pair of pin shafts with shaft sleeves separately, which are connected with the pivot shafts on the both ends of under-frame and upper-frame side plates, a pair of pin shaft connecting rods (18) are arranged separately on both sides inside the under-frame and upper-frame and connected respectively with pivot shaft of relevant upper pin shafts or lower pin shafts; a pair of oil cylinder (17) are separately arranged on the lower pin shaft by the end lug of oil cylinder and connected with the pivot shaft, the other end pivot shaft of the oil cylinder is connected with the upper pin shaft of the oppose side.