The main reasons for stomach twitching bouts but not pain are mild stomach cramps and excessive mental tension. You should try to avoid eating too spicy and cold food, which will stimulate the stomach wall after entering the intestinal system and cause the smooth muscle of the stomach wall to contract and spasm. This will show the stomach twitching phenomenon, some people have mild symptoms so they can not feel the pain, and after a period of time will naturally ease. Excessive mental tension can also lead to stomach twitching, some people will be too much pressure in life and emotional tension phenomenon, long-term will lead to human plant nerve dysfunction, and affect the function of the gastrointestinal system. Not only will the peristaltic speed of the intestines and stomach slow down, but there will also be symptoms of decreased appetite, and the stomach will twitch due to tension when overstressed. Since the mucous membrane and food digestion system in the stomach are normal, the patient will not be accompanied by pain.