Episodes of infantile colic are not regular and do not necessarily occur every day; in some cases they will occur once or twice throughout infancy and stop as they get older. However, there are cases of recurrent episodes, which can last for many years as the baby gets older. So the cycle of infantile colic is not fixed. Colic is a symptom rather than a mere disease, many causes can cause colic, you can refer to the following common causes: 1. Physiological factors: infants with a cold abdomen or improper diet may cause transient colic, or infants eating supplements to produce too much gas, which can also cause colic. The number of episodes is small or only once, and the infant will stop having episodes if he/she does not get cold again or does not consume similar complementary foods; 2. Pathological factors: some infants may be allergic to milk protein, and may have episodes of intestinal colic after drinking ordinary milk powder, and most of the episodes are related to the number of times of eating. Some infants with ischemia or nervous system dysfunction may also cause more frequent and strong contraction of the intestinal wall, resulting in intestinal peristaltic disorder and colic, the number and time are not fixed. In addition, some intestinal diseases such as intestinal obstruction and occupational lesions may also cause colic. Therefore, the cause of colic is different for each infant, and how many episodes will occur is not a fixed state. Parents should observe the specific situation of their infants and try to remove the triggers to minimize the attacks. For prolonged unrelieved cases, it is important to go to the hospital to control or treat the primary disease so that colic will not attack frequently.