The Study of Data Collecting Based on Kprobe

API traces have been used to analyze user behaviour and system software behaviour for years, which lead to advances in file system and storage technologies. We describe the implementation of a lightweight and dynamic API collecting tool which calls Trace_probe in this paper. Trace_probe can trace information of the kernels. It based on kprobe mechanism which is implemented in the 2.6 linux kernel and later versions. This tool is designed to be a mount/unmount module, and its characteristics are simple and lightweight. While it works, it will not affect the normal operations of the users. Further experiments show Trace_probe has some advantags in terms of application limitationen and performance degradation.