Abstract: There is provided a liquid enclosing type vibration isolating apparatus which reduces a number of members to be aligned and which simplifies the assembling procedure in liquid, so as to reduce assembling steps and production cost. A cylindrical rubber body has a reinforcing intermediate cylinder, a concave groove and a through hole to form an orifice passage. The cylindrical rubber body is formed integrated with a diaphragm at a lower end of the cylindrical rubber body. A partitioning member has, on its peripheral part, an orifice passage concave portion. A first assembling step is conducted in air wherein a partitioning member is fitted into the cylindrical rubber body, so as to form an air chamber between the diaphragm and the partitioning member, while aligning the through hole with the orifice passage concave portion.