Abstract: Living in the era of big data information civilization， people have experienced the transition from “acquaintance society” to “stranger society”， mastered the ethical thinking method that combines experience and demonstration， and formed a new relationship of morality and interest. While people enjoy the happiness brought by information civilization， there still exist such ethical issues as network theft， network fraud and network hackers. It has become a hot topic nowadays to regulate the order of network use and restrain the network ethical relationship. Under the guidance of Marxist ethics， Spinello's network ethics and technology theory is optimized. By strengthening the self-discipline and regulating the communication behaviors of network subjects， the unification of network people and moral people can be realized. It is of great significance to create a clear cyberspace and realize the strategic deployment of General Secretary Xi Jinping's comprehensive cyberspace governance.

Key words: big data, Marxist ethics, Socialist Core Value, network ethics and technology theory