Shirt preventing collar from reversely upwarping

The utility model provides a shirt preventing a collar from reversely upwarping, which comprises a shirt and collar corner sheets, wherein the collar corner sheets are arranged on an angular bisector of a collar point of a lapel collar. The shirt preventing the collar from reversely upwarping is characterized in that a cloth strip is added in an interlayer of the lapel collar close to the collar point along the angular bisector of the collar point, partial shape of the cloth strip close to the collar point is same to the collar point, the collar corner sheets are close to the collar point and are sewed on the middle position of the cloth strip, one end of the cloth strip far away from the collar point is fixed on a lower spigot of the lapel collar, and the length of the cloth strip from the collar point to the lower spigot of the lapel collar is slightly smaller than the length from the collar point to the lower spigot of the lapel collar along the angular bisector of the collar point. Because the cloth strip