The "naked eye" symbolizes the naturalistic perspective in Nietzsche's theory of life value, which can be divided into two aspects: first, all values come from the naked eye (the naked eye of the master and the naked eye of the slave), any "mind" that is divorced from the naked eye is a fabrication of metaphysical theology and philosophy, and all values (rational value and divine value) that come from the "mind" are masks of the value of the naked eye; Secondly, all Nietzsche's axiological thinking comes from his own "naked eyes", those who are good at "transforming vision" but always adhere to the "master's position". This paper examines these naked eyes' insight and blindness in seeing morality and the enlightening problems it leads to.