Fuente: Wipo "BigData" The invention discloses a data transaction quality evaluation system based on big data, and particularly relates to the field of data science, comprising a data transaction collection module, a data transaction preprocessing module, a rule management database, a quality evaluation information acquisition module, a quality evaluation information analysis module, a comprehensive quality evaluation module and a comprehensive evaluation report module. According to the comprehensive quality evaluation model in the data transaction quality evaluation system based on the big data, evaluation values of different evaluation functions can be effectively integrated through establishment of the comprehensive quality evaluation model, and a unified quality evaluation standard is formed; the evaluation result meeting the quality standard is set as the quality standard threshold value to be transmitted to the rule management database, the quality standard threshold value is continuously adjusted and set along with the dynamic change of the data transaction environment, and the timeliness and accuracy of the evaluation result are ensured.