Red spots on the baby’s face and neck can be seen in the environment overheating caused by heat rash, baby eczema and other conditions. 1. Heat rash: heat rash, also known as “prickly heat”, is a common inflammatory skin disease in the summer or hot and humid environment, the newborn’s heat function is not yet fully developed, climatic factors, etc. are common causes of heat rash. Patients mainly manifested as skin blisters, red prickly heat, papules and so on. 2. Infantile eczema: Infantile eczema is a common skin disease in children. Excessive cleansing, heredity, early addition of complementary foods and other factors can trigger the occurrence of infantile eczema. Affected children will show red patches, papules, etc., and may also show signs of oozing. Red spots on the baby’s face and neck may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.