A structure for fixing a shift cable comprises a protective tube for receiving the shift cable therein, a connection tube installed outside the protective tube, a damper installed outside the connection tube to attenuate radial and axial vibration, a main casing which is installed outside the damper and forms a clearance for assembly with a mounting bracket, a sub-casing which is detachably coupled to the main casing by means of an axial assembly guide portion, and a cover which is supported by means of an elastic member with respect to the sub-casing and is installed such that an axial displacement of the cover is restricted with respect to the main casing.