The invention discloses a group relationship quality evaluation and intervention method and system based on a graph pairing task. The method comprises the following steps: establishing a test task of a two-person cooperation puzzle; the method comprises the following steps: carrying out double-person cooperation task testing on pairwise testees in a group in turn, recording test data and electroencephalogram signals, calculating to obtain task performance indexes and related characteristics of the electroencephalogram signals when the pairwise testees cooperate to complete tasks, and carrying out classified prediction evaluation on double-person relationship quality and contradictions by combining a machine learning classification model. Obtaining quality scores and conflict levels of pairwise tested relations in the group; pairwise subjects with high contradiction level in the group are extracted for adaptive feedback training, and the contradiction level is reduced to a set range; and averaging all the relation quality scores obtained by the pairwise subjects to obtain an evaluation score of the group relation quality. According to the method, objective and accurate evaluation of the group relationship is realized, and the purpose of closed-loop intervention is achieved in combination with the group relationship quality.
Group relationship quality evaluation and intervention method and system based on graph pairing task