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 and integrated circuit 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 integrated circuit, a lower edge thereof is configured with a plurality of contacts on which electronic elements are soldered the contacts are connected with conducting lines so as to be in connection with a control circuit configured on the rear end of the bougie, furthermore, the contacts, electronic element and conducting lines are encapsulated with sealing glue, thereby allowing the diameter of the imaging lens to be reduced for facilitating endotracheal intubation operation through the simplification of elements on the front end.
