新闻专业主义是西方新闻学的一个重要概念,其主要特征包括倡导新闻报道的客观性;提倡新闻自由和责任;公共服务以及媒体的自律和他律等方面。在新媒体传播时代,新媒体技术的出现使传统的新闻专业主义面临着冲击和挑战,本文以微博为例,探讨其对新闻专业主义的解构以及重构问题。 News professionalism is an important concept of Western journalism. Its main features include advocating the objectivity of news reports, promoting press freedom and responsibility, public service, media self-discipline and other disciplines. In the era of new media communication, the emergence of new media technology has brought the traditional journalism professionalism to the challenge and challenge. This paper takes Weibo as an example to discuss its deconstruction and reconstruction of news professionalism.