The following methods can be used to reduce belly fat:

1. Eat reasonably: Eat less foods with high sugar content, and avoid greasy, barbecued and spicy foods. You can eat more fresh vegetables and fruits, such as tomatoes, cucumbers, pears, lettuce, citrus, etc.; you can drink some honey water, black coffee or yogurt every day.

2. Participate in more sports: Through exercise, excess fat in the body can be eliminated, which is the healthiest way to lose weight. Exercises such as sit-ups, stair climbing, night running, aerobics, yoga, skipping rope, hula hoops, etc. can all consume fat in the belly and waist.

3. Meridian conditioning: Abdominal massage or acupuncture is also effective in reducing fat. It is recommended to find a professional doctor for conditioning.

Please note that losing belly fat requires persistence and cannot be achieved overnight. You also need to choose an appropriate method according to your personal physical condition.