Objectives: The purpose of this study is to examine the test-retest reliability and to suggest methods to enhance reliability. Methods: Participants consisted of 145 patients with generalized anxiety disorder who were diagnosed by the Structured Clinical Interview for DSM-IV Axis I Disorders. Participants were tested twice within one week. Results: The test-retest reliability of the Instrument of Pattern Identification for Jing Ji and Zheng Chong was examined in 145 patients and it was calculated as 0.3919. Internal Reliability of each part was calculated as 0.320~0.502. Reliability and concordance rate of symptoms are presented in the table. Frequency of symptoms and correlation between weight and frequency are also presented in the table. Conclusions: Based on these results, we have modified the Instrument of Pattern Identification for Jing Ji and Zheng Chong.