Losing weight is to reduce excessive body fat and weight; Reducing fat is to lose excess fat in various ways. The difference is: 1. Losing weight means weight and fat. After losing weight successfully, the weight will drop obviously, but reducing fat does not necessarily mean losing weight. 2. Losing weight means reducing fat, and reducing fat means reducing the percentage of fat content in the human body. The purpose of losing weight is to make the body healthy and tangible, which is also the goal of reducing fat. No matter how to lose weight and fat, you need to control your diet and take an active part in physical exercise.