The invention is suitable for the technical field of high-voltage electric appliance quality evaluation, and provides a high-voltage electric appliance quality detection method and terminal equipment.The method comprises the following steps: acquiring first sample data of a high-voltage electric appliance; preprocessing the first sample data to obtain second sample data; performing iterative training on a preset classification model according to the second sample data to obtain a target classification model; acquiring to-be-detected data of a to-be-detected high-voltage electric appliance; and preprocessing the to-be-detected data, and inputting the preprocessed to-be-detected data into the target classification model to obtain a quality detection result of the to-be-detected high-voltageelectrical appliance. Classification design is carried out by adopting an existing mathematical method and model. The method can effectively promote the development of high-voltage electric appliances from manual batch making of inspection plans to data processing and defect analysis based on panoramic state description, effectively carries out the intelligent classification of the defect distribution of different types and brands of high-voltage electric appliances through the classification of the classification model, and improves the work efficiency.