Abstract: The overall format of the digital economy is composed of various economic formats such as Internet plus and Artificial Intelligence+.The important basis for maintaining or supporting the development of the digital economy is the transaction effect,service income and transaction ecology of data assets.How to view the composition of data assets,how to understand the practical correlation between their transaction effects and service returns,and how to interpret the impact of data transaction ecology on transaction effects and service returns are undoubtedly necessary tasks for constructing digital economy theory.Given the strong abstractness of relevant theories,we can consider conducting research on the comprehensive scenario of data transaction ecology based on analyzing the composition of data assets and the correlation between data asset transaction effects and service returns.The content involved in this study is relatively broad and requires an analytical mainline that runs through it.This article reviews and comments on relevant literature,using the trading effects of data assets as the main analysis thread,and depicts a picture of the formation and development of a data trading ecosystem.By analyzing the correlation between transaction effects and service returns,this paper describes the comprehensive scenario of the real data transaction ecosystem,striving to make some marginal contributions to the construction of the digital economy theory building from the transaction level.