The invention discloses a crawler-type telescopic hedge
pruning machine which comprises a self-propelled
machine, fixing supports, a
crank-link mechanism and a
pruning mechanism, wherein the fixing supports are symmetrically distributed along a crawler of a self-propelled device, the
crank-link mechanism is fixedly connected together with the fixing supports, and the
pruning mechanism is fixedly connected with the
crank-link mechanism. The pruning mechanism can unfold and close a tool rest and adjust pruning angles through the crank-link mechanism, an engine is arranged in the inner rear of the self-propelled
machine, a
hydraulic pump is arranged on the side face of the engine, the fixing supports are arranged above the self-propelled machine in front of the engine, an
oil tank and a hydraulic valve are arranged on the fixing supports, and a
hydraulic motor, the hydraulic valve and the
oil tank are connected through a hydraulic oil
pipe. When the machine is used for pruning, the unfolded tool rest is vertically arranged instead of being horizontally arranged, the tool rest is retracted and placed inside the self-propelled machine after pruning, so that overall width and height are effectively controlled, the internal space of the self-propelled machine can be effectively used, and occupied space is decreased.