Abstract: A large amount of dust is easily generated between the hydraulic supports used in the fully mechanized mining face with high mining height, which seriously affects safety production and endangers the physical and mental health of workers. In order to effectively solve the above problems, this paper takes the operational conditions of hydraulic supports in the 132202 fully mechanised mining face as an example, the main dust production points in the process of lowering the column and moving the supports were analyzed. It was found that the main dust production points were the support shield beam and the top beam hinge. By analyzing the problems of traditional dust prevention devices, it was found that using a combination of rubber and sliding groove for dust prevention is prone to the problem of uneven force on the rigid sliding groove, which affects the dust prevention effect due to torsion. A flexible adaptive hydraulic support dust prevention device mainly made of rubber was designed and tested on site. The results showed that the application of this new dust prevention device was effective. Afterwards, the dust reduction efficiency between hydraulic supports can reach about 94%, Improved the working environment for workers, reduced the workload of dust cleaning, and achieved good application results.