The utility model discloses a middle -size and small -size hydraulic engineering machine of opening ice of crawler -type, include handle, bracket, running gear, control mechanism, engine, transmission case, protecting sheathing, support, pivot, pressure ice cam and circular saw, the beneficial effects of the utility model are that: the cover has protection non slip rubber sleeve on the handle, the increase hand is to the control of handle, running gear is caterpillar walking wheel, can not take place to slide on ice surface, cut with the circular saw, press the punching press of ice cam, this kind of the principle of planing is implemented to open ice, moreover, the steam generator is simple in structure, the efficiency that opens ice is very high, the support can the oscilaltion, can play protective apparatus's effect, control the steerable transmission case of mechanism and give the rotational speed of each mechanism's distribution, the operation is thus simple, press ice cam and circular saw periphery to be provided with protecting sheathing, the operator is accidentally injured to the trash ice that the in -process that can prevent like this to open ice splash, whole equipment is small, moreover, the steam generator is simple in structure, easy installation, it is quick effective, safety and environmental protection, the fund of saving.