Abstract： This article introduces Professor ZHOU Zhen's clinical experience in syndrome differentiation and treatment of vertigo based on the pathogenesis theory of phlegm-fluid retention causing dizziness. Professor ZHOU posits that phlegm-fluid retention constitutes the core etiology and pathogensis of vertigo， arising primarily from spleenstomach deficiency and weakness as well as dietary excess—particularly excessive consumption of raw/cold foods— closely linked to modern three excesses and three deficiencies lifestyle patterns. His syndrome-differentiated approach integrates three diagnostic dimensions，including primary symptoms，constitution and tongue-pulse signs. 1）Focus on the primary symptom and identify subtle pathological changes： The secondary main symptom of dizziness should primarily manifest as nausea and vomiting， while cases caused by phlegm-fluid retention often present with dry vomiting or nausea. 2）Differentiate constitution through physical manifestations： Patients typically present with an obese physique bearing puffy flaccidity—apparent obesity with underlying deficiency. 3）Analyze tongue-pulse signs：It is to observe pale-red tongue with swollen dry coating and deep-slippery pulse in patients. Guided by the principle that phlegm-fluid is a yin pathogen requiring warm medicinals，Professor ZHOU combines Linggui Zhugan Decoction with Wuling Powder to simultaneously clear phlegm-turbidity，promote urination，and regulate spleen-stomach clear yang. This therapeutic strategy provides pathogenic outlets while protecting healthy qi.