The invention relates to a power consumer demand response potential determination method, which comprises the steps of acquiring historical load data of 96 points per day of an observation year of consumers; acquiring a characteristic quantity affecting the user load, the characteristic quantity being 1 in total; pre-processing the historical load data and load data of the corresponding day of the characteristic quantity, respectively; based on the time dimension, conducting a clustering analysis of the historical load data to obtain a clustering center C, and dividing the consumers into m classes; predicting a clustering center Cs of a consumer behavior model in a specified prediction day by Bayesian classification; and calculating the demand response potential of the prediction day of the consumers. The method provided by the invention can be used for dynamically calculating the maximum cuttable load capacity of demand response per hour per day of the consumers on the basis of consumer load characteristic analysis and calculating the demand response potential of each single power consumer in demand response activities in a refined manner, thereby providing scientific theoretical support for the development of demand response strategies, and giving full play to the operation efficiency.