Double eyelid surgery is clinically known as blepharoplasty, but not all people can undergo the procedure. Those who are not suitable for double eyelid surgery are as follows: 1. Those with poor general condition: such as those with systemic disorders, such as blood pressure, blood sugar, heart disease, and hematological disorders, these people are less suitable for invasive operations; 2. Those who are not psychologically sound: the patient should be a psychologically sound person with the ability to judge, or whose claim is a reasonable request to have blepharoplasty. If the patient’s own eye condition is not very good and requires a perfect condition, it is difficult for the surgeon to achieve this and is less recommended. 3. Poor local eye conditions: If the patient has eye disorders such as amblyopia, strabismus, conjunctivitis, keratitis, etc., they are less suitable for blepharoplasty. 4. Patients with hyperthyroidism: If the patient also has problems such as hyperthyroidism, for example, if the patient has proptosis, having blepharoplasty 5. Patients with facial palsy: If the temporal branch of the lateral nerve is damaged, the patient cannot close his or her eyes, so if this side needs blepharoplasty, it will increase the size of the eye fissure and aggravate keratitis and conjunctivitis.