The invention relates to a hydraulic pallet type load lifting device applicable to small space. The device comprises a load pallet and a pair of parallelogrammic mechanisms and is characterized in that one end of each of the parallel arms of each parallelogrammic mechanism is hinged on a fixed seat, the other end is articulated with the upper end of a bracket arm, and the lower end of the bracketarm is angularly bent and fixed with a bracket; under the drive of a hydraulic cylinder, the parallelogrammic mechanisms are expanded forwards and descend, or are folded by ascending backwards, around a hinging point of each fixed seat; the load pallet is arranged on the bracket of the parallelogrammic mechanisms by sliding rails; and auxiliary supporting rollers on the sliding rails are matched with fixed sliding grooves so as to support the load pallet kept between the two fixing seats. The invention solves the problem of frequent loading and unloading of loads in a narrow operating space, and has the advantages of simple structure, high working reliability and convenient operation and maintenance.