This paper first investigates the hierarchical structure of multiple data chains and classifies the data chain structure into the application layer, transport layer, physical layer, etc., according to the role classification. Then, the communication of multi-data chain network points is explored, and the forwarding paths between different data chain nodes are planned according to the types of data chains. The data chain messages are planned using the time slot evaluation algorithm, and the practical teaching platform for multi-data chain network thinking is constructed. Finally, the effectiveness of the practical teaching of Civics was evaluated in terms of practical ability, practical literacy, and student performance. The study showed that the significance test of the difference between the post-test of the Civics performance of the two classes was 0.001, which was less than 0.05. Under the dimension of science literacy, the mean value of the Civics practice pre-test was 6.75, and the mean value of the post-test was 7.55, with a difference of 0.4. The quality and efficiency of civics education were significantly improved by teaching civics practice.