The utility model discloses a symmetric multi-degree of freedom full four-wheel drive walking-type chassis of a walking excavator and belongs to the application field of engineering machines. The walking-type chassis comprises a right front leg (1), a swinging base (2), a right rear leg (3), hoist cylinders (4), a left front leg (6) and a left rear leg (5), wherein the right front leg and the left front leg are structurally symmetric; the right rear leg and the left rear leg are structurally symmetric; the swinging base is of a symmetric structure, and consists of a center tank and two side tanks which are located in a vertical direction and respectively arranged at both sides of the center tank in a stepped manner; the swinging base is respectively connected with the right front leg, the right rear leg, the left front leg and the left rear leg through the hoist cylinders and corresponding sleeves A. According to walking-type chassis disclosed by the utility model, oil flow in the swinging base can intercommunicate between the center tank and the side tanks, so that oil storage does not depend on the inner space of the center tank alone any longer, and the oil tankage is improved by at least one time; under the condition of field operation, the fuel oil in main tank is used up, fuel oil on the chassis can be extracted, and the field endurance is high.