TWI848150B

A substrate cleaning apparatus includes a substrate holding mechanism holding the substrate, a rotation mechanism rotating the substrate held by the substrate holding mechanism, and a cleaning mechanism cleaning the substrate. The cleaning mechanism includes a support column, an arm extending from the support column and having a fixed height position, a cleaning tool supported by the arm and cleaning a surface of the substrate by contacting the surface, a lift mechanism moving the cleaning tool vertically with respect to the arm between an raised position separated from the substrate and a lowered position in contact with the substrate, and a controller controlling at least a speed at which the cleaning tool descends.