The invention discloses methods for manufacturing and mounting prefabricated wall members, and belongs to the field of technologies for constructing buildings. By the aid of the methods, the problem of low traditional building construction efficiency can be solved, and the traditional production modes with high energy consumption and severe pollution can be changed. The prefabricated wall members are internally provided with reinforcement frameworks and embedded members, and embedded reinforcement holes, grouting holes and exhaust holes are reserved in the prefabricated wall members. The method for manufacturing the prefabricated wall members includes 1), erecting formworks according to the overall dimensions of the prefabricated wall members; 2), placing the reinforcement frameworks and the embedded members in the formworks; 3), preparing and pouring concrete; 4), carrying out steam curing on the prefabricated wall members; 5), stripping the prefabricated wall members from forms; 6), laterally turning the prefabricated wall members and erecting the prefabricated wall members; 7), inserting or butting the prefabricated wall members. The methods have the advantages that buildings can be constructed by the aid of the prefabricated wall members instead of the traditional construction modes, accordingly, implementation of building industrialization can be promoted, energy consumption and garbage discharge can be reduced, the construction efficiency and the construction comprehensive quality can be improved, and collaborative management can be facilitated.