An inquiry into the notion of "personalistic attitude" in Husserl is attempted. The personalistic attitude and the naturalistic attitude constitute the human-social science and the natural science respectively. According to Husserl, the former is appropriate to explore the values and meanings in the human-social world, whereas the latter in contrast would result in the naturalization of the human-social phenomena, that is, concealing their significance. Husserl contends moreover that his transcendental phenomenology alone is capable of clarifying the correlative relation between attitudes and their constitutions as well as the distinction between attitudes. I hold this to be Husserl's contribution to the theory of human-social science in general, yet I find that Husserl fails to distinguish the daily lifeworld attitude and scientific attitude, because both are involved in the notion of personalistic attitude. Such an ambiguity is held to be a defect in Husserl's theory of human-social science in this paper.