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The present invention relates to a film drawing apparatus comprising: a first tentering clip group formed by a pair of clips respectively circulated in a caterpillar method, horizontally drawing an incoming film, and then opening the same; and a second tentering clip group formed by a pair of clips respectively circulated in a caterpillar method, horizontally drawing the film opened in the first tentering clip group, and then opening the same while having an independent clip circulation path with the first tentering clip group. According to the present invention, the film drawing apparatus can randomly adjust longitudinal relaxation and drawing of the film in the second tentering clip group provided as a heat compensation section. Moreover, the change width of horizontal curvature of the film can be easily adjusted. By applying an effect of free end drawing to the film, the drawn film can have properties of an optical A plate or a biaxial plate.