The study was aimed to compare the timing changes and similarities and differences in the clarity degree of investment between the two provincial governments in Jiangxi and Fujian， clarify the significance of the investment system guarantee to achieve the health goal of chronic diseases， and explore the feasibility of quantifying the clarity degree of government investment based on collecting all relevant policy documents concerning the work of chronic diseases in Jiangxi and Fujian from 1991 to 2017，using the comprehensive quantitative methods to quantify the degree of clarity， and using linear regression analysis to determine the relationship between the degree of clarity and the level of investment. The study showed that the level of investment in Fujian and Jiangxi were increasing year by year. The improvement of the government’s investment in the prevention and control of chronic diseases in both provinces had promoted the health outcomes of patients with chronic diseases in the region. The clarity degree of government investment of Jiangxi Province had a slightly better effect on the prevention and control of chronic diseases than Fujian Province. It is suggested that the continuous and steady growth of investment is the material guarantee to improve the prevention and control of chronic diseases， the investment in the prevention and control of chronic diseases requires a good government?led system and regulatory system safeguards， and the quantitative method of investment clarity degree in the policy text can be further verified and applied in other public health research fields.