The standard height for a 4-year-old girl is 103.1cm and that for a 4-year-old boy is 104.1cm. 4-year-old children who do not have congenital diseases such as congenital hypothyroidism or congenital nutritional disorders, and who do not have genetically shortened heights, such as parents of insufficient height, should eat a balanced diet in their daily lives and not be partial or picky about what they eat. If the parents are short in height, the child should have a balanced and reasonable diet in daily life, without partiality or picky eating, and at the same time, ensure enough sleep every day, and do some bouncing sports activities, the child can usually ensure a good height standard. If the above factors are normal, the child’s height is still obviously slightly shorter, you need to take the child to the hospital, under the guidance of the doctor to give further intervention height.