The author reckons that the compatibility of traditional chinese medicine is a combinative application of two or more chinese medicine.Compatibility of drugs should be the combination and collocation of drugs following regulations and rules.The regulations and rules are just the compatibility theory.It is the important part of the research of the theory of chinese medicine in new century to fulfil the systematic and overall scientific exploration of compatibility theory of traditional chinese medicine.The exploration should contain the meaning

the classification and the extending of compatibility theory of chinese traditional medicine

the scientific research of the combination of chinese medicine on pharmacodynamics

pharmaceutics and chemistry.Finally

the assumption of organization and division of work for the research of compatibility theory of traditional chinese medicine should be put forward.