Experimental: The observation group

All participants were given routine rehabilitation treatment by professional rehabilitation therapists, including exercise therapy, guided education, psychological therapy, acupuncture and massage therapy, to promote the development of motor and cognitive function, as well as to improve intellectual development. Besides, swallowing function training was also provided, including direct training, indirect training, and compensatory training.Within 4 hours of admission, the observation group were required to undergo nasogastric tube removal and initiated Intermittent Oro-Esophageal Tube Feeding for nutrition support.

Active_comparator: The control group

All participants were given routine rehabilitation treatment by professional rehabilitation therapists, including exercise therapy, guided education, psychological therapy, acupuncture and massage therapy, to promote the development of motor and cognitive function, as well as to improve intellectual development. Besides, swallowing function training was also provided, including direct training, indirect training, and compensatory training.The control group was given nutrition support with persistent nasogastric tube feeding , of which the tube passed through the nasal cavity into the stomach.