The invention discloses a white goose large pile washing technology based on a microwave drying method, and relates to the technical field of down processing. The technology comprises the following steps of pretreatment, composite enzyme degreasing, rinsing with clean water, and microwave drying. According to the technology, down is dried through the microwave drying method, so that the down drying efficiency is remarkably improved, the problem of non-uniform drying in a conventional drying method is avoided, the fluffy rate of the dried down is increased, and the phenomena that the down lumpsand is clustered are prevented; meanwhile, a certain sterilization effect is achieved, so that the overall quality of the down is improved.