Itchy after tattoo, consider and irritating dermatitis, skin infection and other factors. It is recommended to pay attention to the care of the affected area, if necessary, can be used externally, oral medication can help relieve the symptoms. 1. Irritant dermatitis: irritant dermatitis is an exogenous dermatosis, if the tattoo material produces allergy, may lead to skin erythema, blisters, papules, itching, oozing and many other symptoms. It is recommended to avoid tattooing afterward, can be used externally with glycerite lotion, if necessary, with oral levocetirizine, loratadine, to help relieve itching. 2. Skin infection: itchy skin after tattooing, but also to understand whether it is related to skin infection after tattooing. It is recommended to pay attention to skin cleanliness and hygiene, external saline, if necessary, apply fusidic acid, mupirocin and other antibiotic ointment treatment. Itchy tattoo, it is recommended to go to the hospital dermatology department, can be given under the guidance of the doctor appropriate medication to help relieve the symptoms.