The invention relates to a breast cup for a breast pump for expressing human breast milk, comprising a funnel (11) for applying to the human mother's breast and a connection part (10), wherein the funnel (11) widens in the direction of the mother's breast and encloses at least one nipple and one areola surrounding the nipple of the mother's breast. The funnel (11) comprises an end near to the breast, which forms a contact edge (12) for contacting the mother's breast. The breast cup has a through-opening (14) which extends from the end of the funnel (11) near the breast up to the end of the connection part (10) further from the breast, and which serves to apply a negative pressure to the mother's breast and to discharge expressed breast milk. The contact edge (12) of the funnel (11) is formed by a space curve that is not positioned in one plane, wherein the funnel (11) has at least two planes of symmetry (S
