<p>A plasma generation device of the present invention, comprising: a vacuum chamber (6) for generating a plasma; at least one antenna conductor (1a) provided in the vacuum chamber (6) so as to generate an inductive electric field when high frequency power is applied; and a first insulator (12a) disposed around a portion of the antenna conductor (1a) which portion exists in the vacuum chamber (6), wherein the plasma and the antenna conductor (1a) are prevented from being in contact with each other by a first space region (18a) intervening between the first insulator (12a) and the portion; and a second insulator (12b) is disposed around the first insulator (12a) so that a second space region (18b) intervenes between the first insulator (12a) and the second insulator (12b).
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