The invention discloses a vibration damping device and a manufacturing method thereof. The vibration damping device (10) includes a hollow housing (12) having a fastening frame (22) and a housing main body (20) attached to the fastening frame (22) for providing the hollow housing (12) enclosing a mass member (16). With the housing main body (20) inserted between top and base plate portions (50, 48) through an opening (58) in the fastening frame (22), an urging force of a first spring projection (64) is directed against the housing main body (20) from one of the top and base plate portions (50, 48) towards the other thereby holding the housing main body (20) pressed against the other of the top and base plate portions (50, 48), while an urging force of a second spring projection (66) is directed against the housing main body (20) towards the opening side from a back plate portion (52) causing the housing main body (20) to become engaged by a catch projection (68), for attaching the housing main body (20) to the fastening frame (22) and preventing it from slipping out through the opening (58) of the fastening frame (22).