The invention relates to a breast shield for a breast pump for pumping human breast milk, comprising a rigid base part (1) having a tubular connecting piece (10) and a funnel (11) that is integrally formed fthereto and that expands away from the connecting piece (10) for accommodating a mother 's breast. The breast shield further comprises a flexible collar (2), which is arranged on the funnel (11) at the end of the funnel (11) facing away from the connection piece (10), and which is designed to be placed on the mother 's breast. Said end of the funnel (11) forms a first contact surface (12), and an end of the collar (2) facing the funnel (11) forms a second contact surface (22), which in a circumferential connecting seam (4) adjoin each other in a blunt way. The funnel (11) has a first wall thickness (14) and the collar (2) has a second wall thickness (24), wherein said second wall thickness (24) is approximately equal to the first wall thickness (14). The breast shield according to the invention can be produced simply and inexpensively, nevertheless allowing a high degree of wearing comfort and a tight fit on the mother 's breast.