Abstract: Four kinds of ceramic particles of WC,ZrO₂,Cr₂O₃ and Al₂O₃ were used as an reinforced phase and the nickel alloy powder as a matrix, the erosive wear properties of four types of composite coatings fabricated with plasma spraying were experimentally studied with the wear test equipment. The erosion surface characteristics of composite coating were measured by means of the surface appearance measuring meter. The effects of the ceramic particle volume fraction, abrasive particle size, impinging angle and velocity on the erosion loss of ceramic particles/nickel alloy composite coatings were investigated with the orthogonal test method. The empirical equations of the erosion loss weight are obtained for the WC,ZrO₂,Cr₂O₃ and Al₂O₃ particles/nickel alloy composite coatings with the multiple regression method.