An endoscope assembly capable for carrying operation devices externally comprises a holding portion holdable by an operator a scope body including a soft tube and a hard tube an end of the soft tube connected to the holding portion and another end of the soft tube being connected to the hard tube the soft tube being bendable and deformable at least one operation unit attached to an outer side of the scope body the operation unit being movable with the scope body to enter into the object to be cured and then is separable from the scope body for performing operations and a carrier attached to the outer side of the scope body for retaining the operation unit to the scope body so that the operation unit is movable synchronously with the scope body when entering into the object, the operation unit is pulled to separate from the scope body.
