Data serves as a crucial production factor and core strategic resource for enterprises in the digital economy era. Through data sharing, enterprises can reduce data collection costs, precisely optimize products and services through big data analysis, enhance competitive advantages, maximize the utilization of data value, and ultimately promote social welfare. In practice, however, data sharing among enterprises has led to risks of market exclusion and competition restriction, such as algorithmic collusion to reach monopoly agreements, abuse of data advantages, and data-driven concentration of undertakings. Inter-enterprise data sharing should adhere to the principles of data portability, data minimization, and FRAND; in terms of the shared objects, it is necessary to draw on the essential facilities doctrine to explore the construction of a mandatory sharing mechanism for essential enterprise data. As for sharing behaviors, a strategic integration of civil law adjustments and antitrust tools should be cleverly employed to achieve effective regulation of inter-enterprise data sharing.