Black spots and black lines in the white eye area are usually caused by conjunctival foreign bodies and conjunctival pigmented nevi. Conjunctival foreign bodies are usually formed when foreign objects from the external environment enter the eye, stick on the surface of the conjunctiva or pierce into the inner conjunctival tissue, such as dust, wood chips, iron chips, etc. when the patient is working or living. The patient needs to go to the ophthalmology department of the hospital to have the foreign body removed by the doctor to eliminate the uncomfortable symptoms. Conjunctival pigmented nevus is usually caused by developmental abnormalities, formed by a large amount of pigmentation inside the local conjunctival tissues, which will affect the patient’s appearance, but usually has no obvious self-conscious symptoms, and can be surgically removed to improve its appearance. It is recommended that patients with black spots or black lines on the white eyeballs and other discomforts should consult the hospital in time to assess their conditions and follow the doctor’s instructions for treatment.