Abstract: A rigid demolding forming device, comprising a forming cylinder (11), a dispersing box (12), a suction box (13) and a forming fabric (14), wherein the forming cylinder (11) has a rigid structure; the dispersing box (12) is arranged in the forming cylinder (11); the forming fabric (14) is externally arranged; and an absorbent material moves from inside to outside. The forming fabric (14) and the forming cylinder (11) are arranged separately, such that the forming fabric (14) can be cleaned conveniently, thereby preventing fabric holes from being blocked. In addition, the forming fabric (14) and other devices are no longer arranged in a forming hole (114), such that when a core body (15) needs to be removed from the forming hole (114) after same is formed in the forming hole (114), product defects or the waste of absorbent materials, which are caused by an electrostatic effect or a viscous force effect of devices such as the forming fabric (14), can be avoided.