Based on the information disclosed on the websites of discipline inspection and supervision of the districts and counties under the jurisdiction of Beijing，Tianjin，Shanghai and Chongqing，this report evaluates the information disclosure of the websites of the discipline inspection and supervision commissions of all the districts and counties under the jurisdiction of the four municipalities in 2020，and concludes that the construction of the public platform has been gradually improving，the information of the organizational structure turns to be more comprehensive，the information of department revenue and expenditure is more standardized and the number of rules and regulations has increased. The work reports of the plenary sessions of the commissions for discipline inspection have been gradually made public，and the information of “Notification exposure” seems more powerful. However，at the same time，some problems still exist，including the imperfect construction of the public platform，the great regional disparities in the revenue and expenditure disclosure of each departments，the insufficient disclosure of the regulations at the same level，the unbalanced information disclosure，the need to publicize the content of the inspection from the higher authority，and the urgent need to optimize social participation. It is suggested that with clarified function orientation，criteria and standardized system should be introduced to promote the standardization of being public，and the public interaction mode should be upgraded to optimize the channels of social participation.