Using statistical data on the implementing conditions of China's educational expenditure published by the state, this paper studies the Gini coefficient of the budget educational public expenditure per student in order to examine the concentration degree of the educational expenditure for China's basic education and analyze its balanced development condition. As the research shows, China's basic education is undergoing an unbalanced development due to diversified factors, which is mainly reflected as follows: firstly, the budget educational public expenditure presents a four-tiered appearance of the strong, the less strong, the less weak and the weak, which lead to a great discrepancy between the two opposing extremes; secondly, the compulsory education in rural areas is still confronted with great difficulties; thirdly, the general senior secondary education is loaded with the crisis of unbalance. Therefore, it is necessary to construct a balanced development policy framework of the basic education and pay close attention to the benefit and effectiveness of the educational input. In addition, it is also important to clearly stipulate the criterion of the government's educational allocation and to support the disadvantaged areas in order to promote the balanced development of the basic education.