Non-epileptic tonic seizure is a kind of seizure repetitive behavior. It is commonly known as “playing heylo” and “playing hard” in northern China. It is characterized as follows: it occurs in infancy, starting at 2-11 months of age, with an average age of 6 months. The seizures are short-lived and occur during waking hours, but not during sleep. There are various forms of expression, mainly staring, staring, gnashing of teeth, grinning, neck extension or neck contraction, shaking the head from side to side, upper limbs straightening and exertion, hands clenching fists, and slight shaking of the trunk. Special movements of the lower extremities are less common, and there is no corneal inversion. Sometimes it can be triggered by speech and posture, or interrupted by external stimuli, and it returns to its original state immediately after the attack. There are no abnormal EEG discharges during the seizure and interictal periods. This kind of seizure is a kind of behavior that can be seen during normal pediatric development and does not affect intellectual development. Non-epileptic tonic seizures need to be distinguished from seizures (e.g., infantile spasms, benign infantile myoclonus) and from other non-epileptic seizure disorders such as hypocalcemic jerks or emotional cross-legged movements. Non-epileptic tonic seizures are a type of non-epileptic seizure. Non-epileptic seizures are a large group of brief episodic abnormal behaviors that are not accompanied by synchronous abnormal EEG activity. These include breath-holding seizures in infancy; pale syncope in infants; gastroesophageal reflux with laryngeal muscle spasm or loss of voice; night terrors; and episodic gaze; these behaviors with “seizure” characteristics are sometimes not correctly described by parents and difficult to determine by physicians, and are often difficult to distinguish from epilepsy.