Since 2016, a large number of children companion robots have emerged in the Chinese mainland market, and these robots have entered thousands of families in China as childcare domestic smart media. At present, most of the research focuses on the gender of the robot, and there is a lack of in-depth and detailed discussions on the people who produce robots, as well as the complex relationship between people and technology in the production process. In order to deeply explore the AI technology and human gender mutual shaping, a six-month ethnography in a well-known technology company was conducted to investigate. Authors of this paper have personally participated in the development of a children companion robot. The study found that, the technology of children companion robot is masculine, and the masculinity of this technology also consolidates the “hegemony” masculinity of the “Zhiban Dad”. However, the masculinity of technology will also change in the process of technology implementation. In order to meet users’ needs for “parenting”, perceptual femininity and personal experience of motherhood are needed, which also urges “Zhiban Dad” to actively make a “compromise” of masculinity in technical practice. The emergence of masculinities shows that technology and gender are not essentialism, they shape each other in practice. The masculinity adjustment of “Zhiban Dad” also provides an opportunity for the appearance of negotiable gender robots. In short, clarifying the masculinities generation mechanism of the producer “Zhiban Dad” will help to understand the male gender and masculinities of current children companion robots.