11 of compulsory education law which concerning entrance age of child deviates from our country\'s facts and has different views on it and can\'t be actually implemented.

In the process of EFL/ESL learning, such factors as language environment, social-linguistic context, learning style, learning age and learning stage must be take into adequate consideration, for they have direct decisive impact on the outcome of the learners effort.

According to the survey,the low age enrollment phenomenon in some small urban of has become increasingly serious.

This essay aims to find out the index related to aging, that is to say aging index, by analyzing the random population’s humeral immunity and biochemical index which changes in accordance with age, and to conduct further discriminatory analysis of biological age through aging index, as well as set up biological age regression equation through .