The invention discloses a brick wall masonry device, which is designed for improving the brick wall masonry quality, and a using method thereof, and belongs to the building construction field. The brick wall masonry device comprises a masonry slot (1), stand columns (2), cross bars (3), a leveling device (4), hinges (5) and vacuum suckers (6); during ground masonry construction, the vacuum suckers (6) are firmly placed on the ground; when the masonry is carried out above the ground, the vacuum suckers (6) are firmly sucked on the wall. The using method comprises the following steps of during masonry, paving mortar in the masonry slot (1), so that a mortar surface is kept flush with the top surface of a adjustable drawbar (12) of the masonry slot; bricking and extruding mortar, so that a vertical mortar joint is full of mortar; lightly knocking a brick face with a cleaver, so that the brick top surface is kept flush with the top surface of a masonry slot plate (11). The brick wall masonry device has the beneficial effects that a mortar leakage phenomenon is not generated, the masonry quality is greatly improved, the mortar leakage is avoided, and the environment is greatly improved.