The present invention relates to an easily inserted menstrual cup. The menstrual cup according to an embodiment of the present invention includes: a main body having an opening formed at one side and a storage part for accommodating menstrual blood therein formed at an inner side; a rim formed at the opening of the main body and configured to prevent leakage of the menstrual blood by closely contacting with the wall of the vagina when the menstrual cup is inserted into the vagina; and a frame formed inside a wall of the main body, wherein the frame is formed of a shape memory material.