There are many ways to treat chest acne, as follows: 1. You can use medications, such as anti-inflammatory drugs or purgatives; 2. Photodynamic therapy is mainly used, and it is also effective for severe cystic acne. Mainly through light to activate the acne bacterium to metabolize porphyrins, so as to achieve the purpose of treatment; 3. Fruit acids are widely found in daily life, such as sugar cane and almonds. Fruit acids are non-toxic, tasteless, and relatively safe, and they are also effective for inflammatory acne; 4. Lasers include intense pulsed light and carbon dioxide fractional laser. Intense pulsed light mainly targets acne forming red marks with good fading effects, while carbon dioxide fractional laser has good treatment effects on acne forming scars; 5. Other treatments, such as prick method for acne, have good effects.