The invention discloses a nozzle with wear-resisting coatings. The nozzle comprises a spray hole. The spray hole is externally provided with a connecting seat. The nozzle is embedded in the connectingseat and is fixed in a threaded mode. First wear-resisting layers are separately arranged on the outer surfaces of the nozzle and the connecting seat. A limiting sleeve is arranged outside the connecting seat. A fixing support is arranged on one side of the limiting sleeve. The fixing support is welded to the limiting sleeve. Skid-resisting layers are separately arranged on the outer surfaces ofthe fixing support and the limiting sleeve. The skid-resisting layers protrude and are fixed to the corresponding fixing support and the limiting sleeve by fixing adhesives. Through the connecting seat arranged outside the spray hole, when in use, the spray hole is fixed by the interior of the connecting seat, and a spraying device is fixed by the exterior of the connecting seat; the connection ofthe spray hole and the spraying device is more stable through the internal and external connection and the cooperative use of the fixing support; wear caused by looseness is avoided and wear-resistance of the nozzle is improved.