A contact measuring endoscope apparatus includes a case located at a front end of the apparatus to define a accommodating space a contact probe connected to and projected from an end of the case by a fixed distance a light emitting element for emitting light an image pickup lens arranged in the accommodating space for gathering light reflected from an external object to be measured, so as to form an optical image a light sensor arranged in the accommodating space to locate adjacent to one side of the image pickup lens for converting the optical image into a digital image and a measuring module. When the contact probe is caused to contact the object to be measured, a fixed distance between the image pickup lens and the object can be maintained and therefore the digital image can be in the fixed scale.
