Human capillaries by environmental factors, physical factors, the phenomenon of dilation, especially when the weather is hotter more obvious, can lead to sweat holes open, producing more sweat. Human blood amino acids can be combined with lactic acid, and then combined with sweat, can generate and volatilize a large number of trimethylamine, for mosquitoes have a strong role in attracting. Therefore, fast breathing, easy to sweat, fast metabolism and pregnancy women are more likely to attract mosquitoes. In addition, often makeup, love to spray perfume or prefer to drink people can emit a certain smell, with a certain effect of attracting mosquitoes. Mosquitoes have a tendency to dark habits, wearing dark clothes may be more likely to “attract” mosquitoes. The mosquito bite will release the anticoagulant component-based saliva, a protein complex, into the body can produce an immune response, and trigger vasodilation, and help tissue blood clotting, resulting in local swelling, itching and other symptoms after the patient was bitten. Daily life can be mosquito nets, electric mosquito incense, electric mosquito racket, flower lotion and other ways to repel mosquitoes. If the mosquito bite, you can immediately ice, and topical application of cool oil, flower lotion and other drugs or sprays with a sense of coolness, help to quickly relieve the redness, swelling, itching symptoms. But the use of attention to avoid the eyes, nostrils, mouth and other parts and surrounding skin, and the existence of wounds should not be used. If the mosquito bite site there are large lumps, or allergic symptoms are more serious, long time does not relieve, it is recommended to seek medical advice in a timely manner, follow medical advice oral cetirizine hydrochloride, loratadine and other antihistamine treatment, or appropriate use of mometasone furoate cream and other hormone cream to relieve symptoms. In case of infection, local erythromycin ointment, aureomycin eye ointment, or oral penicillin, cephalosporin and other drugs can be used for treatment.