It takes 2-3 months to lose weight to 70 kg, and the specific time should be decided according to personal physique and weight loss methods. During weight loss, we should adopt scientific methods to lose weight, try to control personal diet and do more exercise. Generally, you can lose 70 pounds in about 2 months. If you choose liposuction for your physique, the time will be faster and you will lose weight in about 2 months. However, you must choose a regular hospital for surgery. Experienced doctors can reduce the occurrence of adverse reactions. Don't eat too much high-fat or high-calorie food during weight loss, otherwise it may affect the weight loss effect.