本文针对浅层地震勘探中惯用的锤击震源的一些缺陷,扬长避短,设计了一种工作原理新颖的地下声辐射器.采用所研制的装置和相应的声耦合器,在黄土伏土壤层进行了声辐射特性的试验研究.文内给出了试验结果分析.该装置便于携带,具有较高的辐射功率和工作频率,完全满足强衰耗黄土层内目标声探的需要. In this paper, aiming at some shortcomings of the conventional hammer sources in shallow seismic exploration, this paper designed a new underground acoustic radiator whose working principle is novel.Using the developed device and the corresponding acoustic coupler, The experimental research on the sound radiation characteristics is given in this paper.The experimental results are given in the paper.The device is portable, has high radiation power and working frequency, and fully meets the target sounding needs in the strong attenuation loess layer.