Through studying the friction and wear behaviors of arc deposition of stainless steel high-entropy alloy powder core wires under different friction conditions,it can provide reliable guarantee in wear resistance for rapid repair and formation of arc in situ. Four metal elements,Fe,Co,Ni and Cu,consisting of high-entropy alloys,were made into stainless steel high-entropy alloy powder core wire by equal atomic ratio of powder.The wire was deposited on the surface of stainless steel by arc deposition. Nanovea Tribometer friction and wear tester and nanovea PS50 surface profiler were used to test and analyze the wear resistance of bead surface. High-entropy alloys are unevenly dispersed in stainless steel welding layer with FCC phase. The wear resistance of bead is higher than that of stainless steel. The wear volume and wear rate of bead are 30% lower than those of base metal and 308 powder core wire. The FCC phase of high-entropy alloys has a strengthening effect on the wear resistance of stainless steel. With the increase of wear load and wear rate,the friction coefficient of high-entropy alloy bead decreases gradually,and the depth,width and volume of wear mark increase. At the wear load of 2 N and 4 N and wear rate of 100 r/min and 200 r/min,the wear resistance of layer is 1.5 times of stainless steel base material and JQ-308 stainless steel powder core wire,which is mainly characterized by abrasive wear. At the wear load of 6 N and 8 N and wear rate of 300 r/min and 400 r/min,the wear resistance of the layer is twice as much as that of the stainless steel base material and JQ-308 stainless steel powder core wire material,which is mainly characterized by adhesive and exfoliative wear. Applying the high-entropy alloy with exce-llent properties in arc deposition by the way of powder core can realize rapid arc repair or surface strengthening of key parts in the actual environment.