Two year old baby’s rollover leg should be dealt with according to the situation, mild can need no special treatment, serious cases can be corrected at the same time in the treatment of the original disease, etc.. Mild knee valgus or knee inversion in 2-year-old babies can also be physiological, and some of them can be corrected in the process of growth. Generally do not need special treatment, pay attention to follow-up observation can be. If it is pathologic, then we need to carry out the treatment of the original disease and orthopedic correction. Common primary diseases, such as vitamin D deficiency rickets, can be treated with vitamin D and calcium supplements. At the same time, orthopedic braces can be used for correction. If conservative treatment is not effective, surgical treatment such as osteotomy can be considered. If there is any discomfort, it is recommended to seek prompt medical attention. The use of specific drugs should be under the guidance of a doctor.