Tattoo is always itchy may be local dry skin or scar hyperplasia, may also be infectious diseases or allergic reactions and other causes. 1. local skin dryness: tattoo is invasive operation, will cause damage to the local skin and in the short term damage part of the sebaceous gland secretion function, local itching may be related to dry skin. 2. Keloid hyperplasia: Infection or scarring during the healing process of tattooing may lead to keloid hyperplasia, which is usually prone to itchy symptoms in the process of keloid hyperplasia. 3. Infectious diseases: If the tattooed area is infected by bacteria, leading to inflammatory reactions, there are usually symptoms of itching. 4. Allergic reaction: if the tattooed part of the application of ointment or skin care products, or improper selection of color pigments, may lead to allergies, allergic reactions, resulting in local itching. Tattoo is always itchy, it is recommended to actively go to the regular hospital, a clear diagnosis, follow the doctor’s instructions to deal with, so as not to delay the condition.