A liquid processing apparatus of the present disclosure performs a liquid processing by supplying a processing liquid to a substrate that is rotating. A substrate holding unit configured to be rotatable around a vertical axis is provided with a holding surface to attract and hold a bottom surface of the substrate horizontally. A guide unit is formed integrally with the substrate holding unit, disposed around the substrate held in the substrate holding unit, and provided at a position equal to or lower than a height of a top surface of a periphery of the substrate. The guide unit includes a guide surface configured to guide the processing liquid. A rotary cup rotates integrally with the substrate holding unit, and guides the processing liquid towards the cup between the rotary cup and the guide unit.