A dispenser for powder spray detachably installed on a sprayer main body, which generates a flow of air for powder spray, to spray a powder to a target site using the flow of air supplied from the sprayer main body, the dispenser for powder spray comprising: a dispenser coupling unit provided to detachably couple the dispenser to the sprayer main body; a conduit mount unit provided in one end to accommodate a conduit for guiding the powder to a target site; a container accommodation unit provided in an upper end of the dispenser to accommodate the container containing the powder; a powder discharge port provided in a lower end of the container accommodation unit to transfer the powder in the container accommodation unit to a lower space; an air inlet formed to be spaced from the powder discharge port by a predetermined distance to transfer air to the container accommodation unit; and an air movement and mixing tube provided adjacent to the conduit mount unit, the air movement and mixing tube comprising: a guide tube for guiding the flow of air supplied from the sprayer main body toward the conduit mount unit; a first passage extended from the guide tube toward the air inlet to guide the air inside the guide tube toward the container accommodation unit; and a second passage extended from the guide tube toward the powder discharge port to accommodate the powder, which has passed through the powder discharge port, in the guide tube, characterized in that the dispenser further comprises an opening and closing control unit provided between the air movement and mixing tube and the container accommodation unit to move back and forth to shift the locations of two holes that are provided, thereby simultaneously controlling the communication between the first passage and the air inlet and the communication between the second passage and the powder discharge port. a dispenser coupling unit provided to detachably couple the dispenser to the sprayer main body; a conduit mount unit provided in one end to accommodate a conduit for guiding the powder to a target site; a container accommodation unit provided in an upper end of the dispenser to accommodate the container containing the powder; a powder discharge port provided in a lower end of the container accommodation unit to transfer the powder in the container accommodation unit to a lower space; an air inlet formed to be spaced from the powder discharge port by a predetermined distance to transfer air to the container accommodation unit; and an air movement and mixing tube provided adjacent to the conduit mount unit, the air movement and mixing tube comprising: a guide tube for guiding the flow of air supplied from the sprayer main body toward the conduit mount unit; a first passage extended from the guide tube toward the air inlet to guide the air inside the guide tube toward the container accommodation unit; and a second passage extended from the guide tube toward the powder discharge port to accommodate the powder, which has passed through the powder discharge port, in the guide tube, characterized in that the dispenser further comprises an opening and closing control unit provided between the air movement and mixing tube and the container accommodation unit to move back and forth to shift the locations of two holes that are provided, thereby simultaneously controlling the communication between the first passage and the air inlet and the communication between the second passage and the powder discharge port.