[Objective]To understand"theory of sweat pore(Xuanfu)"and its relationship with dysuria,as well as explore Professor SUN Jie's clinical experience in using"theory of sweat pore"to treat dysuria.[Methods]Through the research method of grounded theory,this paper analyzed and constructed a theoretical model that used"theory of sweat pore"to differentiate and treat the dysuria.The clinical documents of 135 cases of"dysuria"came from Professor SUN Jie's clinical diagnosis and treatment database.Besides,according to the qualitative research method by grounded theory,it concluded the core and built the theoretical framework by the three-level coding analysis.[Results]This study concluded that Professor SUN Jie summarized his experience to conclude the core category of"paying attention to the deficiency and excess of sweat pore,regulating and promoting Qi and body fluid".Two categories of"treatment based on syndrome differentiation with theory of sweat pore"and"treatment based on the principle"of dredging and assisting sweat pore were extracted.Based on this,Professor SUN Jie's experience in distinguishing and treating dysuria was derived,which focused on syndrome differentiation and treatment with sweat pore and on distinguishing the deficiency and stagnation of sweat pore and the nature of evil stagnation,and establishing treatment principle of dredging and assisting sweat pore,dispelling evil and supplementing deficiency as the treatment method.When using herbs,he used the prescriptions represented by Cassia Twig and Poria Cocos as the core,and combined alleviating water to dredge and assist sweat pore,warming and dredging to assist sweat pore,particularly good at using herbs of activating Yang.[Conclusion]Based on the research and summary of"theory of sweat pore",this paper summarized Professor SUN Jie's experience in using"theory of sweat pore"to treat dysuria,and constructed a theoretical model for Professor SUN Jie's use of"theory of sweat pore"in the treatment of dysuria.