Abstract: QoE model quantification methods specification based on multipath transmission has not yet formed， so most research has focused on the default routing QoE quantification and evaluation methods of bearer network. To solve this problem， a multipath transmission QoE quantification method was proposed. In the research，it was pointed to QoE quantification affecting factors according to network performance indicators of multipath transmission. And then， multipath transmission QoE quantification calculations were explained in detail. At the same time， the design process of the proposed model was given， including QoE quantification model formula specification， QoS performance indicators selection， human factors parameters setting and the scoring rules setting. Finally， the effectiveness of multipath transmission QoE quantification method was demonstrated by OMNeT++ simulation experiments. The multipath transmission mode QoE quantification problem can be solved by this algorithm， whose superiority is also effectively demonstrated.

Key words: multipath transmission, overlay network, QoE quantification model, QoS performance indicators, human factors, OMNeT++