PROBLEM TO BE SOLVED: To provide a cover-fitted cup which can prevent contents from scattering outside and adhering to fingers and is hygienic without the contact of the finger with a taking out part when the cup is opened by a cutting member. SOLUTION: A cover member 12 includes a top surface part 32 having a weakened part 45 formed which can be cut and the cutting member 33 connected to the weakened part 45. The cutting member 33 includes a cutting piece 51 connected to the top surface part 32 in the weakened part 45 and an operating piece 52 connected to the cutting piece 51 through a connecting part 51A. The weakened part 45 is extended along an end edge outward in the diametrical direction of at least the connecting part 51A side in the cutting piece 51. The operating piece 52 is operated so that the weakened part 45 is cut together with a seal member. COPYRIGHT: (C)2010,JPO&INPIT