This paper attempts to analyze the current characteristics of news photography and the value and existing problems of professional news photography in the new media environment, and proposes specific methods for the reform of photojournalism teaching in colleges and universities and countermeasures for students to participate in professional practice. Ethical issues such as privacy leaks, security breaches, and data gaps arising from the application of big data information technology, as well as ethical issues such as robot rights, algorithm bias, and poor information arising from the application of artificial intelligence (AI technology). Perfection of ethics and knowledge the integration is deepened at the level of human ideology; ethics and morality regulate the knowledge economy, which can provide guidance for the harmonious and healthy development of knowledge under the ethical framework.