The invention is applicable to the field of measurement and provides a method for position association between binocular vision systems. The method includes: providing at least two groups of binocular vision systems and making an overlap exist between the measurement ranges of the at least two groups of binocular vision systems; according to a relational expression and at least four coordinate values of an overlap part of any two groups of binocular vision systems, calculating a parameter of the relational expression of the any two groups of binocular vision systems; and using the parameter of the relational expression and the relational expression of the any two groups of binocular vision systems to unify measurement coordinates of the any two groups of binocular vision systems into the same three-dimension coordinate. The method has the advantages of expanding the measurement range.