The invention relates to a plane three-degree-of-freedom electro-hydraulic mechanism type sliding loading robot. The plane three-degree-of-freedom electro-hydraulic mechanism type sliding loading robot comprises a movable arm lifting mechanism, a bucket control mechanism and the like. According to the sliding loading robot, hydraulic elements are introduced into the movable arm lifting mechanism, so that the pressure of two cylinders is the same, the problem of unbalanced stress of two driving chains for lifting movable arms of an existing controllable sliding loading mechanism is solved, and the bearing stability of the movable arms is increased. The sliding loading robot has the characteristics of high mechanical efficiency, high response speed, high moving accuracy, good controllability and the like of the existing controllable sliding loading mechanism, has the advantages of low noise, no exhaust gas emission, low energy consumption and the like and is suitable for construction engineering such as garbage collection, road maintenance and the like in cities and other densely populated places; and the hydraulic elements are introduced, so that the sliding loading robot has high bearing and antivibration performance, an overload protection function is easy to realize, the reliability and practicability of the sliding loading robot are greatly increased, and the loading robot can be operated in a harsh construction environment.