噪声环境下的端点检测在语音信号分析和识别中占有重要地位。文中将分形理论中的分形记盒维数应用到端点检测算法中，采用了基于分形记盒维数与短时能零比相结合的端点检测算法，以分形记盒维数为主要判决条件，并在判决门限的设定上采用了自适应机制。-Noise environment endpoint detection in speech signal analysis and identification play an important role. Wen will be fractal theory of fractal box dimension in mind applied to the endpoint detection algorithm, using case based on fractal dimension and short-term in mind can be nil to a combination of endpoint detection algorithm to the fractal box dimension in mind as the main sentence conditions, and decision threshold setting on the use of adaptive mechanisms.