The invention provides a stone cultural relic shallow layer repair material including an inorganic solution and a low-activity mineral powder; the inorganic solution includes a potassium silicate solution, deionized water, solid potassium hydroxide, potassium fluosilicate, sodium lignosulfonate and borax. The low-activity mineral powder can undergo a reaction with the specific inorganic solution under certain conditions; in a process of slow hardening, a cured material having compact structure and good weatherability and having a microstructure similar to that of rocks and ultimate strength similar to that of shallow layer rock mass is formed, and the cured material can be closely and firmly combined with stone cultural relics and is matched with the appearance of the shallow layer rock mass; therefore, requirements of protection and reinforcement of the cultural relics are met, and the defects that a conventional low-activity mineral slag cannot be used and causes pollution and waste are caused after being discarded are solved.