Based on the solid rocket motors of different diameters spliced, a set of automatic spraying device for solid rocket motor interface adhesive had been developed , adhesives property, spraying process parameters,quality control parameters research was carried out. Through the related experiments,it confirm that the equipment worked steadily and bonding Characteristics fulfilled the requirement of product by selecting reasonable parameter to sparying . High quality of the products obtained and work efficiency greatly improved, it provide the basis for related equipment studies