The invention discloses a low NOx burner and a wall-hanging stove provided with the same. The low NOx burner comprises a baffle plate and a plurality of fire grates which are arranged parallel one another, wherein a plurality of fire holes are formed on the upper sides of the fire grates; the low NOx burner further comprises a plurality of igniting covers, wherein a plurality of secondary fire holes are formed on the upper sides of the igniting covers, secondary fire transfer holes are formed on two side walls of the igniting covers, and the igniting covers are mounted above the fire grates to form secondary mixed burning fire grates with double-layered fire holes. By reducing the highest temperature of the roots of the fire grates and reasonably organizing the burning air flows and improving the generating and standing times of a high temperature region, the content of NOx of the burner after gas burning is effectively reduced, so that the content of NOx is reduced to a fourth-level or fifth-level discharge standard range from a third -level discharge standard, the national emission-reducing environment-friendly policy is met, and the applicable range of a product is expanded.