Itchy face in hot weather, consider and sweat stimulation, solar dermatitis, cholinergic urticaria and other factors related. It is recommended to pay attention to skin care, external medication, with oral medication if necessary, can help relieve the symptoms. 1. Sweat irritation: the weather is hot, the body’s heat production increases, sweating increases. Sweat causes irritation to the skin, resulting in an itchy face. It is recommended to pay attention to personal hygiene, timely drying and cleaning after sweating can reduce itching. 2. Solar dermatitis: summer ultraviolet radiation is relatively strong, ultraviolet radiation leads to facial skin damage, can also cause face itching. You can use tacrolimus and pimecrolimus ointment to apply externally. Oral vitamin C, calcium gluconate, loratadine, etc., have anti-allergic, anti-itching effect. 3. Cholinergic urticaria: Cholinergic urticaria is caused by increased body temperature, such as exercise, emotional excitement, overheating diet may be triggered, resulting in itchy skin or the appearance of wind. Antihistamines such as loratadine, ebastine and fexofenadine hydrochloride can be given to fight allergies and relieve itching. Itchy face in hot weather, it is recommended not to often be in a hot, hot environment, if necessary, go to the hospital dermatology department to find the cause, follow the doctor’s instructions for targeted treatment, do not self-medication.