Tattoos are permanent artificial pigment spots formed by puncturing the skin with pigments, which play a role in decorating and beautifying the skin. The interval between tattoo washing is about 3 months. Many young people yearn for tattoos to keep up with the trend, or to imitate some singers and artists. In fact, you must think clearly before tattooing, because tattoos are easy to remove. Tattoos only need to pay a little time and money, and indelible patterns will appear on the body; However, if you want to wash tattoos in the future, you must pay many times the time and the price is much more expensive. So how to get a tattoo is the best? Laser is a kind of high-energy strong light, which has the characteristics of good monochromaticity, high brightness, high density and strong radiation direction. In medicine, the instantaneous high energy of laser is absorbed by specific components in the skin structure, and through the process of skin regeneration and healing, the diseased tissue is destroyed, and the ideal therapeutic effect is achieved. Laser is mainly used to treat some pigmented skin diseases. Different wavelengths of laser can achieve different therapeutic purposes. CO2 laser is one of the most commonly used lasers, which can be used to remove various vegetations on the skin surface, such as moles, warts and skin vegetations. Recently, the Venus multi-wavelength laser machine made in America is more advanced and can treat many diseases. The laser system has three therapeutic wavelengths, which are used to remove black and blue pigmentation (such as Ota nevus, eyebrow tattoo, eyeliner tattoo, tattoo and traumatic tattoo) and red and yellow pigmentation. The clinical effect is very obvious. Tattoos on the body are different from eyebrows. Although the tattoos on the body look similar to dark blue, they are actually tattooed in the depths of the skin in most cases, so it needs to be operated 2~3 times more. If the tattoo is deep, the stripping operation of erbium-doped laser can also be taken in parallel. In particular, the color of tattoos may determine the number and methods of different operations. Red, yellow and green tattoos need to be treated in parallel with other lasers, and the number of operations will increase. Early doctors used carbon dioxide laser to treat tattoos, but due to technical limitations, the effect was not ideal. At present, laser is often used to treat tattoos. Generally, shallow tattoos can achieve obvious results or even be completely eliminated after one treatment. For tattoos with deep color and position, a lot of treatment is needed. The therapeutic effect is also related to the types of pigments used in tattoos. Apply sunscreen after laser tattoo, and pay attention to prevent sun exposure.