Disclosed is a disposable paper plate having a curling portion formed in a circular rim portion to improve a flatness as a whole, and a curling portion capable of maintaining the overall shape regardless of content such as food or the like contained in the inside. And a manufacturing method thereof. A disposable paper sheet 100 having a curled portion according to the present invention includes a bottom planar steel portion 110 disposed at a central portion of a predetermined disposable plate disposable paper sheet material M2 and concentrically formed to reinforce strength, A plurality of corrugations 121 radially formed along the circumference of the bottom planar steel section 110 concentrically with the bottom planar steel section 110 and having a concave downwardly recessed part 120, A rim 130 concentrically formed with the wrinkle 120 and an outermost rim 130 connected to the rim 130 and a curling part 140 coupled to the rim. According to the present invention, a curling portion is formed on a circular rim portion to prevent a distortion phenomenon caused by twisted edges, so that the flatness of the disposable paper sheet can be generally improved, A plurality of wrinkles radially formed on the rim can act as a main feature, so that the overall shape can be continuously maintained regardless of contents such as food or the like contained in the inside.;
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