Disclosed in the utility model is a protection cover for a hydraulic oil tube. The protection cover comprises a protection cover body for protecting a connection position of a hydraulic oil tube joint. The protection cover body includes protection side walls, a protective cap, and an opening portion. To be specific, the lower portions of the protection side walls are fixedly connected to a front landing leg of a traction machine or a tensioner. The protective cap is fixedly connected to the upper portions of the protection side walls; the protection side walls and the protective cover form an internal space; and the hydraulic oil tube joint is arranged in the internal space. The opening portion is arranged at the protection side wall; and the hydraulic oil tube passes through the opening portion. According to the scheme, the phenomenon of the front landing leg hydraulic oil tube of the traction machine or tensioner is damaged due to treading or collision can be effectively avoided. Moreover, the design of the protection cover is simple and practical; the cost is low; and the hydraulic oil tube can be dismounted and repaired conveniently.