2, fennel dumplings efficacy and function: fennel contains fennel oil content, it can stimulate the gastrointestinal neurovascular, but also can relax the gastrointestinal smooth muscle, to help eliminate the accumulation of gas in the stomach, and play a stomach, gas, pain, can help to relieve gastric spasm, reduce stomach pain. Promote digestion: the fennel oil component of fennel dumplings has a pungent odor and can help promote the secretion of digestive juices, which can enhance appetite, promote digestion and relieve the effect of greasiness.