The invention provides a loop-free directed graph-based data tracing modeling method, which comprises the following steps: positioning a traceable index; decomposing the index; tracing data; verifying the result; and solidifying the result. A global data tracing view is built by gradually tracing data assets and specifying a key monitoring point and a risk point, so that erroneous data can be quickly analyzed and positioned; tracking in a data transfer process can also be achieved; efficient sharing application of the data is greatly promoted; and a basis is laid for data operation monitoring work. Therefore, the target of improving the quality of the data assets is achieved.