Substrate processing apparatus and substrate processing method

A substrate processing apparatus supplying a processing solution to a substrate for performing prescribed processing, comprising:

• a rotary base member, having a support member substantially horizontally supporting said substrate, rotatably supported about a vertical axis, said support member engaging with said substrate for preventing said substrate from horizontal movement and rotation with respect to said rotary base member while allowing vertical movement of said substrate;
• a rotating/driving part rotating said rotary base member;
• a processing solution supply part supplying said processing solution to a lower surface of said substrate supported and rotated on said rotary base member;
• and
• a proximity suction member provided above said rotary base member, downwardly and outwardly injecting gas from a support surface of said proximity suction member to toward the overall peripheral edge of an upper surface of said substrate supported by said support member Bernoulli effect, said support surface being a lower surface of said proximity suction member located on a plane substantially parallel to said substrate on said rotary base member.