Nietzsche violently exposed and criticized traditional Christian morality and modern rationality. In terms of epistemology, Nietzsche was an extreme anti-rationalist, and he made the most thorough criticism of any rational philosophy. He believes that the spiritual life of Europeans for two thousand years is centered on belief in God, and humans are God’s creations and appendages. The value of life and everything in human beings rest on God. Although the basis for God's existence has begun to disintegrate since the Enlightenment, in the absence of new beliefs, people still believe in God and worship God. Nietzsche's famous saying, "One shout - God is dead" - is a ruthless and fearless criticism of God. He said through the mouth of a madman that he was the murderer of God and pointed out that God deserved to be killed. Christian ethics constrains the human mind and suppresses human instincts. If people want to be free, they must kill God. Nietzsche believes that the decline of Christianity has its historical necessity. It transformed from the religion of the oppressed into the religion of the rulers and oppressors. Its decline is a historical necessity.

After killing God as God, we ushered in the God of capital, God incarnated by capital. Nietzsche ignored a basic fact: being enslaved by capital is not much freer than being enslaved by God. But the enlightening value of his cry "God is dead" cannot be underestimated.

Nietzsche believed that in a world without God, people have gained unprecedented opportunities and must establish new values, values ??centered on human will. For this reason, traditional moral values ??must be liquidated. Traditional moral concepts are the last cover of God. They penetrate deeply into people's daily lives and corrode people's hearts. Nietzsche claimed to be an amoralist and anti-Christian. He violently criticized Christian morality and the virtues advocated by Christianity.