A miniature observation mirror imaging lens structure is disclosed, an outer tube body is in engagement with a front end of a bougie, and only an optical filter, lens, integrated circuit and circuit board are configured inside the outer tube body in sequence from front to rear, where a light emitting diode (LED) is configured on one side of the optical filter, electronic elements are soldered on the circuit board, a upper edge and lower edge thereof are respectively configured with a plurality of upper contacts and lower contacts； the integrated circuit can be linked with a control circuit on the rear end of the bougie after it is soldered on the upper contacts and conducting lines are soldered on the lower contacts, thereby allowing the diameter of the imaging lens on the front end of the bougie to be reduced for facilitating endotracheal intubation operation.
