The utility model relates to a device for placing feculence, in particular to an active device positioned on mobile treatment center. The device is applicable to mobile treatment centers employed in units like hospital, nursing home, epidemic prevention station, etc. The utility model comprises an extension bar, an adjusting bolt, a connection bar, an outer ring, an inner ring, and a supporting hook. When the device is not used, it can be positioned at the bottom of the upper board of mobile treatment center through the adjusting bolt, the extension bar, and inner and outer rings. When it is used, the inner and outer rings are lowered through the adjusting bolt and extension bar, and then a yellow plastic sack is placed in the inner and outer rings. The utility model has advantages of simple structure, convenient operation, nice appearance, being convenient for nurses to operate, and prominent economic and social benefits.