In the paper an attempt is made to structure the concepts concerning the relation between the theory of law, the policy and the legislation. The author has distinguished and described the theory of law as (1) a structured set of theorems and (2) a discipline of science. When the term 'policy' refers to certain social actions undertaken in order to achieve a pre-defined goal, then the meaning of policy represents the methodological characteristics of the policy of law. In that context complex interrelations and dependencies between theorems of the theory of law, directives of the policy of law and the principles of legislation are analysed. Digitalizacja i deponowanie archiwalnych zeszytów RPEiS sfinansowane przez MNiSW w ramach realizacji umowy nr 541/P-DUN/2016