The present invention relates to a bonding apparatus and a method of controlling an bonding apparatus. The bonding apparatus and the control method of the bonding apparatus can stably adhere the adhesive to the downstream end portion of the sheet in the conveying direction. The bonding device has a support portion and a nozzle. The support portion can support the lower cloth from the lower side. The nozzle is disposed on a side opposite to the side on which the support portion is located with respect to the lower cloth. The nozzle has a discharge port through which the adhesive can be discharged downward. The nozzle is displaceable between a first relative position and a second relative position. When the nozzle is in the first relative position, the discharge port is opposed to the lowercloth from above. When the nozzle is in the second relative position, the discharge port is opposed to the lower cloth from above at a position on the rear side where the discharge port is located when the discharge port is in the first relative position. While the nozzle is moving from the first relative position to the second relative position, the discharge port discharges the adhesive to the lower cloth in a stationary state.