Aiming at the problem of small climbing force and poor carrying capacity of traditional magnetic adsorption climbing robot,the design and manufacturing method of magnetic adsorption crawler climbing mechanism with high climbing force/weight ratio was studied.A new structural design scheme of magnetic adsorption crawler was proposed,the prototype of climbing mechanism was developed,and the performance was tested.Based on ANSYS finite element analysis,the best combination modes of four Halbach magnet array elements were compared and analyzed,the lightweight design of the attachment mechanism was realized,and the adsorption force and self-weight ratio of the magnet array element were effectively improved.For the purpose of applying the magnet arrays in a climbing robot system,a crawler type climbing mechanism was designed by integrating chain drive and synchronous belt drive.The climbing mechanism was tested through experiments,and it was used in the magnetic adsorption climbing robot system to complete the vertical climbing and inverted climbing.The maximum adsorption force and self-weight ratio of the climbing mechanism is about 2.54.