One and a half year old babies with squinty eyes and purple lips may be caused by hypoxia, febrile convulsions (due to high fever causing convulsions and seizures), epilepsy and other causes. 1. lack of oxygen: one and a half year old baby if there is a lack of oxygen in the brain, may cause eyes squinting, and may be due to the lack of oxygen in the blood, resulting in capillary blood discoloration, and lip purple situation. 2. Fever and convulsions: one and a half year old babies with acute fever and high temperature may cause convulsive seizures, which may be manifested by squinting eyes and purple lips. 3. Epilepsy: If a one and a half year old baby suffers from epilepsy, because epilepsy is caused by abnormal brain discharges, it will affect the normal nerve function, which may cause the appearance of strabismus, accompanied by purple lips. A one and a half year old baby with strabismus and purple lips, parents should take the baby to the regular hospital in time to identify the cause of the disease, under the guidance of professional doctors to take targeted treatment.