Abstract: [Problem] To make an in-plane variation of a plasma density uniform. [Solution] A shower head according to an embodiment of the present technology includes a head body and a shower plate. The head body has an inner space. The shower plate includes a plurality of gas injecting ports communicated with the inner space, a gas injecting surface on which gas is injected from the plurality of gas injecting ports, and a plurality of hole portions disposed on the gas injecting surface. The shower plate is configured in such a manner that surface areas of the plurality of hole portions are radially gradually increased from a center of the gas injecting surface.