Abstract: The answer to “what is constitution” is related to the quality of our constitutional government,however,some misinterpretation exists in the jurisprudential circle.To make it clear,we should be aware that the constitution is a parent law instead of a public law,that it is a subjective law as well as an objective law,and that it is both a fundamental law and a fine law.

Key words: constitution, public law, objective law, fine law