PROBLEM TO BE SOLVED: To provide a balloon unit which can quickly stop bleeding in a uterus without creating a risk of an infectious disease.SOLUTION: A balloon unit 1 for hemostasis includes a balloon catheter 2 for hemostasis and a connector cover 3. A first terminal 25 communicating with a first passage and a second terminal 27 communicating with a second passage are connected with a proximal end portion of a tube 21 of the balloon catheter 2 for hemostasis while branching at a first angle &alpha；. A base portion of at least one of the first terminal 25 and the second terminal 27 is constituted to have flexibility to be bendable. The connector cover 3 has terminal storage parts 31, 32 configured to be able to store the first terminal 25 and the second terminal 27 while the first and second terminals are bent in such a manner to form a second angle &bgr； that is a sharper angle.
