Disclosed is a foldable menstruation cup, comprising an outer cup body (1), a flow guiding pipe (2) and a foldable portion (3). A top cavity (11) is formed in the outer cup body (1). The outer cup body (1) has a circular opening (12) at the top. The bottom opposite to the opening (12) of the outer cup body (1) is connected to the flow guiding pipe (2) through the foldable portion (3). The flow guiding pipe (2) has an orifice (21) communicating with the top cavity (11) of the outer cup body (1). The flow guiding pipe (2) is provided with a valve capable of controlling the communication of the orifice (21). The foldable portion (3) can protrude upwards to make the top of the flow guiding pipe (2) insert into the top cavity (11) of the outer cup body (1) along with the foldable portion (3). The foldable portion (3) can be pulled straight down to form a bottom cavity (31) in the foldable portion (3). When the foldable menstruation cup is used, the foldable portion (3) being deep in the top cavity (11) of the outer cup body (1) is inserted into the body. Pressure is generated in the body when menstruation is discharged from the female body. The foldable portion (3) can slowly unfold downwards under the action of the pressure to finally form the bottom cavity (31). The bottom cavity (31) and the top cavity (11) combine together to form a menstruation cup having a larger cavity. All menstruation discharged from the body can be contained in the menstruation cup, so that the female has no abdominal distension.La présente invention concerne une coupelle pour menstruation pliable, comprenant un corps de coupelle extérieur (1), un tuyau de guidage découlement (2) et une partie pliable (3). Une cavité supérieure (11) est formée dans le corps de coupelle extérieur (1). Le corps de coupelle extérieur (1) a une ouverture circulaire (12) au niveau de la partie supérieure. Le fond à lopposé de louverture (12) du corps de coupelle extérieur (1) est relié au tuyau de guidage découlemen
