Environment protection chopsticks and chopstick covers

The utility model relates to chopsticks for diet and relative sheaths, wherein the chopsticks are composed of 2-3 cone muffles which are embedded with each other integrally and slide relative to each other via little external force to realize extension, to be drawn in use and compressed in free. The sheaths are provided with support clamps and hookers, while the support clamps are provided with taper holes or slots which size can clamp the chopsticks, the hookers can suspend sheaths and chopsticks on clothes as pen. The utility model has small volume, portable property, the application with other tableware, flexible assembly, and sanitary application, which can be used by outdoor user.