Currently, the results of static taint analysis cannot explain whether the application has privacy leaks directly (high false positives), which causes inconvenience to the detectors or users. Aiming at this problem, this study puts forward a new technique-multi-source binding taint analysis, which can determine whether multiple sets of sources occur in one execution precisely and efficiently. In terms of precision, the technique supports context sensitivity, flow sensitivity, and field sensitivity, and can precisely distinguish exclusive branches. In terms of efficiency, an efficient implementation method is provided to reduce high complexity (exponential level) to an analysis close to traditional method (initial overhead is 19.7%, further multi-analysis stage time is 0.3s). A prototype called MultiFlow is implemented, and it is applied to 2 116 benign Apps and 2 089 malicious Apps. Such results support the feasibility of multi-source technique for precision enhancement of privacy leak detection (reducing multi-source pairs by 41.1%). Also, these characteristics are used as a risk rank standard of the Apps to improve detection convenience. Finally, the potential application scenarios of the technology are explored.