The work aims to study corrosion and wear law of NiCrBSiC/WC spray-fused composite coating of KCJ-15 snow lifting mixer. 7 groups of NiCrBSiC/WC composite powder with different WC mass fractions were prepared, and frictional wear experiments were carried out in different corrosive liquids. Then a group exhibiting best wear resistance was selected for frictional wear experiments under different load and at different sliding speed. In the same kind of corrosive liquid, friction coefficient of the spray-fused coating changed slightly with the increase of WC content, and the wear rate first decreased and then increased with the increase of WC content. The friction coefficient and wear rate of test block spray-welding coating soaked in HCl and NaCl solutions were generally high, while those of test block spray-welding coating soaked in NaOH and H2SO4 solutions were generally low. The friction coefficient and wear rate of spray-welding coating increased with the increase of load. The friction coefficient increased and the wear rate decreased with the increase of sliding speed. When the WC content is between 15% and 25%, the best wear resistance can be obtained on NiCrBSiC alloy coating of KCJ-15 snow lifting mixer. The friction coefficient of the spray-fused coating is greatly influenced by corrosive liquid, external load and sliding speed, and slightly affected by WC content.