Windowsill beam on masonry wall body

The utility model relates to a windowsill beam on a masonry wall body. The windowsill beam on the masonry wall body is characterized by being provided with a reinforced concrete structure; the windowsill beam comprises a structural part that extends into the wall body, and another structural part that does not extend into the wall body; the structural part that does not extend into the wall body is of a polyhedral structure composed of an inner side surface, an inner side upper plane, an outer side upper bevel and an outer side surface. Compared with the traditional windowsill beam, the windowsill beam on the masonry wall body has the advantages that cracks in inner corners at the part in which the traditional windowsill beam is connected with the masonry wall body can be effectively avoided, and the water leakage probability of a windowsill is reduced.