Mosquito bite site blisters is due to the body of the mosquito venom produced an allergic reaction, the emergence of larger blisters is generally caused by bacterial infection. Mosquito bites are mostly seen at night in summer and fall, more in the south than in the north. After being bitten by mosquitoes because the venom stays in the skin tissue, the venom stimulates the skin tissue to produce an allergic reaction, and the skin will produce pimples, blisters, and wind clouds, and many of the pimples will also have pin-tail-sized blisters in the middle of the pimples. Often accompanied by a pronounced itching sensation, which can sometimes be accompanied by pain. As some mosquitoes have more bacteria on their mouthparts and bodies, or some people are bitten and then repeatedly scratch the rash leading to bacteria in the nails infecting the skin. Blisters of soybean to broad bean size will appear on the skin, with thin walls that are easy to rupture and yellowish liquid inside, accompanied by different degrees of itching or pain. Mosquito bites are recommended to go to the dermatology department, follow the doctor’s instructions to standardize the treatment, under the guidance of the doctor to use medication. You can apply glycerine lotion, salbutamol ointment and other anti-itching drugs to treat the itch, and mupirocin ointment, erythromycin ointment and other drugs to treat the skin after the symptoms of infection.