Shoulder narrowing can be solved by the following methods: 1. Back muscle strength training to open the shoulders backward and lift the chest can increase the shoulder width. The training includes pull-ups 4-6 sets per day, 12-16 times per set, and high pull-down 4-6 sets per day, 12-16 times per set. Through the above strength training, the back muscles can be significantly enhanced after 3-6 months, thus widening the shoulder. 2. Perform shoulder pushing action to enhance the strength and circumference of deltoid muscle, training includes barbell push-ups, 4-6 sets per day, 12-16 reps per set, dumbbell push-ups 4-6 sets per day, 12-16 reps per set, each set of action should be required to achieve complete power exhaustion, by exercising the front, middle and back of deltoid muscle The three bundles can make the shoulders significantly wider.