The invention discloses an activity excitation type grinding aid used for vertical mill grinding mineral slag, and belongs to the technical field of mineral slag additive. The activity excitation typegrinding aid used for vertical mill grinding mineral slag is composed of a material A and a material B; the material A is composed of, by weight, 15-30 parts of polypropylene-based amine salt, 10-15parts of diisopropylethanolamine, 5-10 parts of triglycol, 3-10 parts of ethylene glycol butyl ether acetate, and 50-75 parts of water; the material B is composed of, by weight, 5 to 8 parts of redispersible latex powder, 10 to 20 parts of ultrafine aluminum silicate, 10 to 20 parts of an activator, and 40 to 70 parts of limestone powder. According to the invention, a plurality of chlorine-free components are adopted, optimization of design composition is adopted so as to obtain the activity excitation type grinding aid used for vertical mill grinding mineral slag; in the activity excitation type grinding aid used for vertical mill grinding mineral slag, the synthetic effect of the components is achieved, so that problems of conventional grinding aid such as poor grinding air effect on vertical mill grinding mineral slag are solved, and at the same time, mineral powder activity is excited effectively.