In the current regulations of Law, we see the term of "Defects clause", but can not find that the definition of it. This makes the courts and scholars dispute what is the right of"Defects clause"and what is the effect of it. To Sum up the types of "Defects clause" on the theory, we will find that the disputes should be distinguished from 'defects liability' and ' independence liability'. This study regards this as the types foundation to start discussing. For the purpose of examing independent-liability existence, this study proposes two standards to analyze as follow: First, whether the Defects clause violate the regulation of Law? Second, whether the Defects clause create new obligations beyond civil law? After comparing and analyzing every difference of defects-liability and independence-liability types one by one, this study will sum up all the results. Expecting the results of this study would be helpful to distinguish disputes between defects-liability and independence-liability on theory.