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On the occasion of the fourth anniversary of General Secretary Xi Jinping's visit to Shandong, this paper takes the case of Qingdao city health examination and adopts the social satisfaction evaluation system to highlight the idea of "people-oriented". The purpose of city health examination is to identify "urban illnesses" and suggest the appropriate treatment. Qingdao City introduced the social satisfaction evaluation index system in the city health examination, and summarized the problems in the city construction and management through the satisfaction evaluation results, and found that the overall satisfaction score and satisfaction performance of the residents were relatively low, primarily due to: 1) the unbalanced spatial layout of infrastructure and public service facilities in each district in the city; and 2) the unbalanced spatial layout of infrastructure and public service facilities in each district in the city. 3) Housing price polarization and a lack of housing inclusion. 4) The issue of problematic parking remains unresolved. The article makes a suggestion

compared with other boiler water treatment, combined water treatment (CWT) has the great advantage on anticorrosion, anti-scale, the guarantee of unit security economy operation, so it is used widely. This paper introduced the thermodynamics theory and dynamics influence factor of CWT, and introduced in detail about the influence of the water pH value, the oxygen concentration and the conductivity. It summarized the merit of compound oxygen treatment , and pointed out the matters needing attention using CWT.