In Orlicz space,the formula of computation of a new norm that we call Φ-Amemiya norm is given. In this paper,we disscuss the conditions of norm attainability of the Orlicz space equipped with Φ-Amemiya norm, and the criterion of an extreme point is studied. Based on this,the conditions under which the norm of the Orlicz space with the Φ-Amemiya norm can be reached are discussed. The necessary and sufficient conditions for the strictly convex Orlicz space of the Φ-Amemiya norm are reached.