To provide a separable hinge which can be easily and positively attached through one-touch operation in the field, and achieves good installation state thereof.

The separable hinge is comprised of a linking member 3 connected to a rotation connecting portion which connects frame-side blades together, a door-side blade 5 equipped with a linking structure 4 and separated from the linking member 3 before linkage, etc. The linking structure 4 has a connecting member 6, a spring 7, etc., and attached to a door 100 via a screw hole 53. The connecting member 6 includes a protrusion 61 having outside surfaces 61a on both sides thereof, and the linking member 3 has a groove portion 32 having an internal surface 32a. The linking member 3 and the linking structure 4 have gaps δz and δy, respectively. By virtue of the gaps δz and δy, the linking structure 4 can be easily inserted into the linking member 3, and after the insertion, the protrusion 61 is combined with the groove portion 32 by using a spring force to eliminate the gaps, whereby the door can be installed in the frame in a good condition.