A detachable endoscope having a buffer function includes: an operation part for operating the front end of an insertion part having an illuminating photographing part to be bent and a detachable unit for detachably coupling the insertion part and the operation part, wherein the detachable unit includes: a first detachable module connected to the respective other ends of first, second, third, and fourth operation wires having the respective one ends connected to the front end inside the insertion part and provided on the rear end of the insertion part, and a second detachable module connected to first, second, third, and fourth connection wires of a direction conversion part for converting a rotational motion into a linear motion in the operation part and provided on the front end of the operation part.