Cough is a common clinical problem to which various etiologies are attributable. In Korean medicine there are differentiations in etiology such as food-accumulation and Yin-deficiency. This study was aimed to analyze the relations between the time of cough and Korean syndrome differentiations and to compare the symptoms of Korean syndrome differentiations (food-accumulation and Yin-deficiency). Sixty-two cough patients were analyzed and classified into one of two syndrome differentiations by etiology. We compared the time of coughing and symptomatic characteristics of two: such as symptom differences and change of severity after treatment. Patients with food-accumulation were more prevalent than patients with Yin-deficiency. Among symptoms, anorexia, dyspepsia, nausea and nasal discharge were more prevalent in food-accumulation while pruritus of throat was prevalent in Yin-deficiency. Coughing at night was prevalent in Yin-deficiency and coughing at rising hour was prevalent in food-accumulation.