Baby finger long barbs may be related to excessive friction with objects, dry skin, lack of vitamin C, vitamin B and other factors, the specific analysis is as follows: 1. Excessive friction: babies who often like to play with sand or other hard toys, coupled with the baby’s own skin is relatively delicate, so there will be repeated friction leading to finger long barbs occur. 2. Dry skin: if the baby’s skin is dry, especially in the fall and winter, it may cause the skin under the nails not to be well cared for, and the situation of barbs will occur. 3. Lack of vitamin C, vitamin B: baby finger barbs may be a lack of vitamin C and vitamin B, accompanied by a dull face, white lips and other adverse reactions. The baby finger long barbs may also have other reasons, it is recommended to go to the hospital in time for relevant examinations, clear causes and then actively treat the symptoms.