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To improve the reliability of array sonic logging instrument, an aging and testing system for the analog circuit of acoustic logging tools is developed. The hardware of the aging and testing system composes of PXI system and relevant auxiliary dedicated hardware. Based on LabVIEW platform, the control and data processing software are developed to realize automatic aging and online testing for the analog circuit of acoustic logging tools. In the data processing, digital phase sensitive detection algorithm instead of a fitting method to calculate the distortion, this simplifies the computational complexity and improves the precision of the calculation. The aging and testing system features good stability and scalability, and greatly improves the efficiency of aging and testing process. It guarantees the reliability of the new high-end acoustic logging tools and the existing array acoustic logging tools.