There are many reasons for the protrusion of the patient’s eyes, as follows: a. Thyroid-related eye disease: this condition is more common and can cause the protrusion of the eyes, it is best to go to the hospital to check the thyroid function, blood tests T3, T4, but also to do ultrasound examination of the thyroid gland to rule out abnormalities in thyroid function. Two, high myopia: easily lead to eye protrusion, you can do eye ultrasound, observe whether the eye has posterior scleral grape swelling. Third, a swelling grows behind the eye: If this type of condition occurs, a CT examination of the eye is needed to observe whether there is a swelling pressing on the eye at or around the back of the eye and causing protrusion. Therefore, regardless of the condition of the protruding eye, an ophthalmologic examination as well as other systemic examinations are needed so that the cause can be clarified.