Abstract: Using the methods of literature review, case study and depth interview, this paper studies,from the perspective of STS and image technology phenomenology, the nature of refereedecision-making aid technology, and puts froward solutions to the ethical risks based on an analysis of the causes for the increasing use of referee decision-making aid technology. It is believed that under the condition of space-timesymbiosis between humans and machines, humans still have the legal and ethical basis for making final judgments. The hasty use of machines to replace human refereeing will eliminate the physical attributes of refereeing work and competition activities, thus turning sports into a logical game of "false-true judgment". The use of referee decision-makingaid technology has brought about five types of ethical conflictsincluding: conflict between physical and technical perception, conflict between procedural fairness and result fairness, conflict between referee responsibility and enforcement ability, conflict between factual fairness and artificial fairness, and conflict between intervention requirements and technical feasibility. In order to properly deal with the risks brought about by technological intervention, the paper suggests: reinterpreting the concept of contemporary competition fairness, reconstructing the balance of competition interests, and using interveningtechnology by political means.

Key words: referee, decision-making aid technology, image technology phenomenology, fairness, ethics, competition