Syndrome of dampness-heat in middle jiao is a common pattern in gastroenterology,and therapy of clearing dampness-heat in middle jiao is the commonly used treatment for this syndrome. Combined with the medical cases,this paper differentiates and analyzes the similarities and differences on syndrome and pathogenesis between Banxia Xiexin Decoction and Huanglian Wendan Decoction,Xiaoxianxiong Decoction and Qingzhong Decoction,Lianpu Decoction and Modified Liansu Decoction,Liangge Powder and Ganlu Xiaodu Pellet,Haoqin Qingdan Decoction and Dachaihui Decoction. It is considered that,both Banxia Xiexin Decoction and Huanglian Wendan Decoction show the effects of opening with pungent and descending with bitter natured drug,the former makes reinforcement and elimination in combination,the latter emphasizes removing phlegm. Both Xiaoxianxiong Decoction and Qingzhong Decoction can treat stomachache,the former focuses on clearing phlegm and regulating qi-flowing,the latter aims at excessive heat in stomach. Both Lianpu Decoction and Modified Liansu Decoction can treat syndrome of adverse rising of stomach qi,the former resolves dampness with aromatics,the latter co-regulates cold and heat. For Liangge Powder and Ganlu Xiaodu Pellet,it should make clear differentiation on disease location. Both Haoqin Qingdan Decoction and Dachaihui Decoction can clear stagnant heat in liver and gallbladder,but the degree of illness is different. In clinical practice,only when the syndrome and pathogenesis characteristics of each recipe are held,the accurate and effective prescriptions could be selected.