The invention relates to a comprehensive evaluation method for quality of traditional Chinese medicine. According to the method, the comprehensive index of the quality of a sample is taken as a quantitative index for evaluating sample quality, the comprehensive index of the quality is calculated by adopting a triangle area method; first, normalization processing for data is performed by adopting a ratio method, so as to eliminate dimensions, and different evaluation result data are changed to be numerical values from 0 to 1; second, the triangle area method is adopted for carrying out integrated processing on data in three dimensions of experience, chemistry and biology, so as to obtain quality embedded values (triangle area numerical values) of samples in different batches; finally, when the all data in the three dimensions are 1, the triangle area is the maximal, and triangle areas of all samples are used for dividing the maximal triangle area, so as to obtain the comprehensive index of the quality. According to the method in the application, the comprehensive index of the quality embodies the integral view of the traditional Chinese medicine, blends traditional cognition and modern cognition, and connects efficacy and safety.