The precursors of waking up in a vegetative state include changes in vital signs, response to external stimuli, and so on. 1. Changes in vital signs: The vegetative person only retains some basic nerve reflexes and the ability to carry out the metabolism of substances and energy. The patient has no voluntary movement and cannot speak. Before the vegetative person wakes up, there may be fluctuations in heartbeat, pulse, and respiration. 2. Response to external stimuli: Before waking up, the vegetative person may respond to external stimuli, such as blinking and pointing. If the patient is a vegetable, it is recommended to pay attention to care and standardized treatment under the guidance of doctors. Vital signs are monitored before the vegetative person wakes up, and physiological responses to external stimuli are checked. It is recommended that specialized physicians be scientifically diagnosed and treated.