Intestinal barrier damage is a prominent feature of non-alcoholic fatty liver disease （NAFLD） and serves as a critical factor driving the progression from simple fatty liver to non-alcoholic steatohepatitis （NASH）， fibrosis， and cirrhosis. The "turbid pathogenic factors entering the blood" theory integrates classical traditional Chinese medicine （TCM） principles with contemporary disease evolution trends and research findings. It posits that endogenous turbid pathogenic factors within the body infiltrate the blood vessels， leading to impure and viscous blood quality， thereby triggering various diseases. Based on this theory， this article elucidated the pathogenic mechanism of NAFLD-associated intestinal barrier damage. It argued that in NAFLD， the liver loses its dredging function， and the spleen becomes obstructed and dysfunctional. Moreover， essential nutrients fail to be properly transformed， resulting in the internal generation of turbid pathogenic factors. This subsequently initiates a series of pathological changes， namely， "infiltration of phlegm-turbidity into the blood， eroding the intestinal mucosa"， "infiltration of glucose-turbidity into the blood， macerating and eroding the intestinal mucosa"， "infiltration of heat-turbidity into the blood， scorching and eroding the intestinal mucosa"， and "infiltration of stasis-turbidity into the blood， stagnating and eroding the intestinal mucosa"， ultimately causing intestinal barrier damage. Furthermore， guided by the "turbid pathogenic factors entering the blood" theory， this article explored TCM intervention strategies： employing medicinals targeting the liver meridian to address the root cause and reduce the generation and deposition of turbid pathogenic factors in the liver， administering blood-system medicinals to clear the blood and purge turbidity， thereby intercepting the progression of the disease mechanism， and applying tonifying medicinals to bolster healthy Qi and defend against turbid invasion， allowing the damaged intestinal mucosa to gradually heal. This article presented novel theoretical and medicinal perspectives for analyzing NAFLD-associated intestinal barrier damage based on the "turbid pathogenic factors entering the blood" theory， aiming to provide new entry points and broader horizons for related research and clinical practice.

Objective To observe the clinical efficacy of acupoint application based on the formula ofBu Yang Huan Wu decoction in treating stroke due to qi deficiency and blood stagnation.Method Totally 109 patients with stroke due to qi deficiency and blood stagnation were randomized into a treatment group of 55 cases and a control group of 54 cases. In addition to the basic treatment, the treatment group was intervened by acupoint application based on formula ofBu Yang Huan Wu decoction at Dazhui (GV 14), Zusanli (ST 36), and Xuanzhong (GB ), while the control group received relevant health education. The symptom and syndrome score of traditional Chinese medicine (TCM), National Institute of Health Stroke Scale (NIHSS), and Barthel Index (BI) were observed before and after treatment, and the clinical efficacies and relapse rates were compared.Result The symptom and syndrome score of TCM, NIHSS score, and BI score were significantly different from that before treatment in both groups (P<0.01). The changes of the TCM symptom and syndrome score, NIHSS score, and BI score in the treatment group were significantly different from that in the control group (P<0.05). The total effective rate was 88.2% in the treatment group versus 69.2% in the control group, and the difference was statistically significant (P<0.05). Four cases in the treatment group got relapsed, accounting for 7.8%; 7 cases got relapsed in the control group, accounting for 13.5%. There was no significant difference in comparing the relapse rate between the two groups (P>0.05).Conclusion Acupoint application is an effective method in treating stroke due to qi deficiency and blood stagnation.