Pregnant women can be mosquito bites can cause insect bite dermatitis, there will be pimples, edematous erythema, etc., can be used externally to reduce swelling and itching medication, the seriousness of the condition can be appropriate to apply weak hormonal ointment. 1. Anti-swelling and anti-itching ointment: you can apply local glycerine lotion, with astringent and anti-itching effect, can relieve edema and itchy skin symptoms. 2. Weakly effective hormone ointment: for serious mosquito bites, you can use topical Dinaid cream, hydrocortisone butyrate cream and so on. Pregnant women in the use of these creams treatment, need to be used under the guidance of a doctor, in addition to pay attention to not scratching the affected area, so as not to break the skin infection.