Network live broadcasts, a new form of entertainment from the media, have entered the public's vision and have gradually become one of the mainstream entertainment methods for current netizens. It has played a positive role in promoting people's production, life, social and economic development and cultural inheritance. According to the basic view of Marxism, everything is divided into two parts, and network live broadcasts are no exception. As a double-edged sword, network live broadcasts not only promote society but also breed network chaos. For example, the rapid development of network live broadcasts is accompanied by a large number of ethical problems, including pornography, language violence, propaganda and superstition, as well as out-of-context publicity methods of network media, resulting in extremely negative impacts on network live broadcasts. Based on the introduction of network live broadcasts, this paper qualitatively analyses the influence of network live broadcasts in contemporary inland China and explores the positive and negative effects of network live broadcasts to provide a feasible method for the healthy development of network live broadcasts in contemporary China. Research shows that network live broadcasts have both positive and negative impacts on individuals, the economy, culture and society in China. Only with the efforts of the government, individuals and society to build a harmonious, healthy and orderly network environment can the healthy development of network live broadcasts be guaranteed.