Abstract: As the mainstream referee mode for sports events, the machine assisted referee mode, limited by the pursuit of smoothness in sports events, has caused the following problems in realizing the value of sports event referees: it has shaken the impartiality at the factual level; it has damaged the openness in the machine calculation; it has damaged the fairness in athlete rights. Based on the technological capabilities of artificial intelligence, the contradiction between smoothness and the value of sports referee can be resolved with the human-machine collaborative referee mode. To establish a human-machine collaborative referee mode, it is proposed that artificial intelligence should be recognized as having the qualification to make judgments and the power to make independent judgments. The inherent defects of algorithmic decision-making should be improved to resist external interference from algorithmic decision-making. It is necessary to distinguish between factual and non factual judgments, change the auxiliary positioning of machine equipment in factual judgments, and construct a human-machine collaborative judgment mode similar to the "two instance final trial and trial supervision system".