Abstract: CoCrMoSi coating was deposited on CrZrCu with HVOF, and its cold-hot fatigue and war resistance were studied, analyzed and compared with NiCo plated coating widely applied in metallurgy industry.The results show that at 450℃ CoCrMoSi coating possesses high cold-hot fatigue property and it can endure 113 times cold-hot fatigue, while the plated coating only has 37.8 times.Both abrasive wear and adhesion abrasion occurred on the CoCrMoSi coating and NiCo plated coating.Adhesive wear is the main type of wear on the plated coating and it also has serious abrasive wear.But abrasive wear almost is not found on the CoCrMoSi coating, and it only has slight adhesive wear.The wear-resistance of the coating is much higher than that of the plated coating.