A change of environment suddenly grew a lot of pimples on the face, consider and allergic dermatitis, eczema, acne and other factors. It is recommended to get rid of the allergens, but also targeted to give glucocorticoids, antihistamines, antibiotics and other drugs for treatment. 1. Allergic dermatitis: everyone’s skin type is different, if the skin type is more sensitive, change the place to contact pollen, dust mites, animal hair, etc., can cause an allergic reaction, resulting in skin acne. It is recommended to get out of the environment, topical glycerine lotion, Dinaid cream, tacrolimus ointment, etc., can help to relieve the symptoms, do not scratch with your hands during the treatment period, to avoid inducing infection. 2. Eczema: The cause of eczema is complex, and may be related to the joint action of a variety of internal and external factors, such as living in a humid environment, the intake of spicy and irritating food, resulting in a decline in the body’s immune system, which may induce eczema. Topical hydrocortisone butyrate cream and glycerite lotion, together with oral cetirizine, can be used to help control the patient’s condition. 3. Acne: Long-term overtime work and late night, mental stress, the living environment is not adapted to cause endocrine disorders, resulting in acne on the face of a different place. It is recommended to have a regular routine and reasonable diet, oral tanshinone capsule, topical fusidic acid and other drugs for treatment. The reason for this is that there are many reasons why acne can occur on the face when you change the environment. It is recommended to pay attention to daily habits, timely to the hospital dermatology department for diagnosis and treatment, under the guidance of the doctor to use medication, do not self-medication.