Abstract: An electronic device and a method for screening a sample are provided. The method includes the following steps. N samples corresponding to a first object are received, in which the N samples include a first sample. N similarity vectors respectively corresponding to the N samples are calculated, in which the N similarity vectors include a first similarity vector corresponding to the first sample. The first similarity vector includes multiple first similarities between the first sample and each of the N samples except the first sample. The first sample is determined to be a representative sample of the first object in response to an average value of the first similarities of the first similarity vector being the maximum value among average values of N similarities respectively corresponding to the N similarity vectors.