Objective: By studying the "Xuezhenglun Vol. 1" and "Xuezhenglun Vol. 5-Amenorrhea" to understand the Qing Dynasty physician Tang Zonghai's treatment theory for menstrual amenorrhea and make it applied in clinical. Methods: 1. Analyze the physiological mechanism of menstrual blood in "Xuezhenglun Volume 1", 2. Integrate the various syndromes and treatment methods of amenorrhea mentioned in "Menstrual Disorders". Result: Tang's understanding of the relationship between water, fire, qui and blood and its pathogenic mechanism was inspired by "Nei Jing" and "Nan Jing", and his works have profound influence on later generations of physicians. Conclusion: The key points of the treatment of blood diseases and amenorrhea syndrome are as follows: 1. Treating menstrual diseases, both qui and blood must be taken into account, 2. Focus on the spleen and stomach, and strengthening middle jiao, 3. Subdividing cold, heat, deficiency, and positive treatment.