Flabby belly at the age of 40 may be caused by overweight, aging or pregnancy, and can be improved by strengthening exercise, radio frequency lipolysis, surgical treatment and other ways. 1. Enhance exercise: patients can run, swim, sit-ups, plank support, push-ups and other exercises to eliminate excess abdominal fat, reduce abdominal subcutaneous fat can make the belly become tighter. 2. Radio Frequency Lipolysis: If the 40-year-old belly sagging is more obvious, you can visit a formal medical institutions through radio frequency lipolysis to tighten, lift, but also to improve the phenomenon of belly sagging. 3. Surgical treatment: for 40-year-old belly sagging serious people, you can choose to consult a formal medical institutions through surgery to remove excess skin, such as abdominoplasty, can effectively improve the phenomenon of 40-year-old belly sagging. There are many ways to tighten the 40-year-old loose belly, the condition is mild, you can take to strengthen the exercise to improve, if necessary, you can go to the hospital, under the guidance of a professional doctor to choose the appropriate treatment program.