The utility model discloses shoulder-strap-free gathering underwear with a combined front buckle. The shoulder-strap-free gathering underwear comprises an underwear body. The underwear body comprises two cups arranged at the front part and a rear shroud ring for connecting the two cups into a whole; the inner sides, close to each other, of the two cups are connected through a low-elasticity small buckle and an adjustable large buckle; the underwear body further comprises lower parts arranged on the left side and the right side, and the lower parts are arranged on the lower sides of the two cups respectively. The adjustable large buckles are fixed to the positions, close to each other, of the two lower supports; the two ends of the rear shroud ring are respectively connected with the outer side edges of the two cups to form side wings for wrapping auxiliary breasts; and an elastic strap for adjusting the tightness is arranged on the inner side of the rear shroud ring. Wherein the low-elasticity small buckle is used for connecting the two cups, the adjustable large buckle is used for adjusting the length of the lower band, through mutual matching of the combined front buckle, a user can quickly wear the shoulder-strap-free gathering underwear, and inconvenience caused by a traditional back buckle design is avoided.