The invention discloses masonry cement. The masonry cement is prepared from the following raw materials in percentage by mass: 30 percent to 50 percent of construction waste powder, 25 percent to 40 percent of clinker powder, 0.1 percent to 1 percent of an active excitation component, 0.005 percent to 0.01 percent of a water retention component, 0.005 percent to 0.02 percent of an air entraining component, 0.1 percent to 1 percent of a plasticizing component, 2 percent to 6 percent of gypsum powder and the balance of mineral powder. The masonry cement provided by the invention has good physical properties and operability and utilization ways of construction wastes can be increased.