Based on the principle of magnetic adsorption and negative pressure adsorption, the magnetic adsorption type wall climbing chassis and negative pressure adsorption type wall climbing chassis are developed. The magnetic adsorption type wall climbing chassis can be adsorbed and walked on the steel wall. Combined with the flexible support framework, the surface wall climbing function can be realized. The negative pressure adsorption type wall climbing chassis has the ability of adsorption and walking on the flat wall of any material， and the use scene is broader.