A plasma generation apparatus comprising: an electrode cell (1, 2a, 2b, 3); a power source part configured to apply an AC voltage to said electrode cell; and a housing that encloses said electrode cell, said electrode cell including: a first electrode; a second electrode facing said first electrode so as to form a discharge space; and a dielectric (2a,2b) arranged on at least either one of a main surface of said first electrode facing said discharge space and a main surface of said second electrode facing said discharge space, said plasma generation apparatus further comprising: a pipe passage configured to directly supply a source gas from the outside of said housing to said discharge space without being connected to a space within said housing where said electrode cell is not arranged, characterized in that: said electrode cell further includes: a pass-through formed in a central portion of said electrode cell in a plan view, said pass-through penetrating said electrode cell with respect to a facing direction in which said first electrode and said second electrode face each other, and said plasma generation apparatus further comprises: an insulating tube having a cylindrical shape and arranged in said pass-through, said insulating tube including an ejection hole that is formed in a side surface of said cylindrical shape. an electrode cell (1, 2a, 2b, 3); a power source part configured to apply an AC voltage to said electrode cell; and a housing that encloses said electrode cell, said electrode cell including: a first electrode; a second electrode facing said first electrode so as to form a discharge space; and a dielectric (2a,2b) arranged on at least either one of a main surface of said first electrode facing said discharge space and a main surface of said second electrode facing said discharge space, a first electrode; a second electrode facing said first electrode so as to form a discharge space; and a dielectric (2a,2b) arranged on at least either one of a main surface of said first electrode facing said discharge space and a main surface of said second electrode facing said discharge space, said plasma generation apparatus further comprising: a pipe passage configured to directly supply a source gas from the outside of said housing to said discharge space without being connected to a space within said housing where said electrode cell is not arranged, characterized in that: said electrode cell further includes: a pass-through formed in a central portion of said electrode cell in a plan view, said pass-through penetrating said electrode cell with respect to a facing direction in which said first electrode and said second electrode face each other, and said plasma generation apparatus further comprises: an insulating tube having a cylindrical shape and arranged in said pass-through, said insulating tube including an ejection hole that is formed in a side surface of said cylindrical shape. said electrode cell further includes: a pass-through formed in a central portion of said electrode cell in a plan view, said pass-through penetrating said electrode cell with respect to a facing direction in which said first electrode and said second electrode face each other, and said plasma generation apparatus further comprises: an insulating tube having a cylindrical shape and arranged in said pass-through, said insulating tube including an ejection hole that is formed in a side surface of said cylindrical shape.