Panmoralism critique is a critical way which uses the ethics as the value standard to judge all social phenomena. In the process of criticizing, regulation is replaced by the ethical judgment and moral admonishment, which hides the dislocation or the lack of the institution. The aimless and negative critique in immoral field makes pessimism or fancy available. Then, the flexibility of the morality itself leads to the possibility of panmoralism; The propagation effect of panmoralism critique is reinforced by the initiative of language expression; The cultural gene of panmoralism critique thinking is activated by the virtue theory of “pursuing ones perfection by virtue”; The occurrence of the panmoralism critique is boosted by the ignorance of the moral rules. Therefore, the deep analysis of the causes of panmoralism critique is the supposition of correcting the irrational moral criticism in an effective way and using moral standard in a scientific way.