To establish the rational clinical application standard of Tanreqing injection, providing reference for rational clinical application of Tanreqing injection.

Based on the drug instructions of Tanreqing injection and referring to the Basic Principles of Clinical Application of Traditional Chinese Medicine Injections, professional guidelines and relevant literatures, the rules for evaluating the rationality of clinical application of Tanreqing injection including 11 indicators such as indications, usage and dosage, and solvent selection were formulated. The analytic hierarchical model (AHM) method was used to evaluate and analyze 198 archived medical records of Tanreqing injection from January to December 2021 in our hospital.

The main problems in the unreasonable application of Tanreqing injection included the duration of treatment, indications, usage and dosage, drug combination, etc. Among the 198 cases, 24 cases (12.1%) had a medical record score ( MRS) ≥90，44 cases (22.2%) had a score of 80≤MRS < 90, 82 cases (41.5%) had a score of 60≤MRS < 80, and 48 cases (24.2%) had a score of MRS < 60.

The use of Tanreqing injection in our hospital is basically reasonable, but there are still some problems in terms of treatment course, usage and dosage, drug combination, indications, etc. The AHM method is simple and practical, which provides a new method for the evaluation of the drug rational application.