In order to survey the background properties such as the plane and vertical spatial distribution of the black soil surface matrix in the Qiqihar work area， 320 soil boreholes were designed with a drilling workload of 1600 m. It is required to take 0~5m undisturbed soil samples， which are sampled according to the principle of layering to determine the characteristics of the layering structure and physical and chemical properties of surface matrix. To ensure the quality of the project， the GL-10 backpack drill was used， which is a handheld hydraulic cylindrical soil sampling drill. It uses a hydraulic power head to drive the impact round chisel and drill rod for impact drilling， which effectively solves the limitations of traditional drilling and the problem of sample contamination. This article elaborates the drilling technology and working principle of the backpack drill， and demonstrates their outstanding performance in various aspects. During the survey of the construction process， the backpack drill showed its flexibility， portability， and efficiency， as well as its reliability in obtaining accurate surface matrix samples and data. The results indicate that backpack drill can adapt to complex and diverse surface conditions， providing a convenient and effective technical means for surface matrix survey， significantly improving the accuracy and efficiency of survey work， and having important practical significance and application value for promoting the development of surface matrix survey technology.