The invention relates to a selective laser melting manufacturing process for an annular array blade guide. The process comprises the steps of 1, model segment processing, specifically, an annular array blade guide three-dimensional model is equally divided into multiple sections; 2, material selection and setting of process parameters; 3, determining of a placing mode and designing of a support structure; 4, correcting of the size precision; 5, selective laser melting forming; 6, after-treatment, specifically, parts together with a base plate are placed into a vacuum heat treatment furnace, warm is kept for one hour at the temperature of 800 DEG C to eliminate residual stress, and then the parts are cut and the support structure is removed; and 7, welding, specifically, all the segmented parts are fixed on a welding fixture and welding is carried out to obtain an integral annular array blade guide part in an argon-arc welding or laser welding mode. The part size precision, stress deformation and surface roughness are well controlled in the process, mechanical performance of the parts is superior to traditional castings, the manufacturing cycle is short, and the efficiency is high.