PURPOSE: A disposable paper cup is provided to prevent contamination from various kinds of bacteria by pressurizing the upper peripheral part of the paper cup without touching by a hand and opening the entrance of the cup. CONSTITUTION: A disposable improved paper cup (10) is formed with a round periphery curvature portion (23) by turning an upper periphery part (20) outwardly and folding the upper periphery part downwards and making the upper periphery part into a dual periphery part (22). The dual periphery part is formed by folding the upper periphery part which is solid and can be opened by one hand. The entrance (30) of the paper cup can be opened to allow a user to drink water by pressing both upper ends of the paper cup inwardly.
