NiCr-Cr₃C₂based self-lubricating composite coatings of different content of cladded MoS₂by Ni powder were deposited on 304 stainless steel by plasma spraying technology. The phase composition, microstructure and frictional behaviour of coatings were reasearched. The results indicate that the kinds of coatings have same phase composition, whch is Cr₇C₃, Ni and MoS₂. Mechanical bonding forms between coating and substrate, the porosity of coatings is low, a small amount microcrack exsists on the surface of coatings. Excessive or scarce cotent of cladded MoS₂by Ni powder in the coatings can induce worsening of frictional behaviour, the lowest value of friction coefficient and wear rate are separately 0 . 36 and 3 . 3 X10^-4mg / s, which the content of cladded MoS₂by Ni powder in the coatings is 30 % .