Abstract: A smart toothbrush-based tooth-brushing evaluation method, apparatus, terminal device and storage medium are provided. The evaluation method comprises: real-time acquiring toothbrushing data detected by a data detecting device in a smart toothbrush; analyzing the toothbrushing data and performing statistics for each brushed tooth surfaces to obtain a brushing time and a number of times of a high-amplitude brushing-with a brushing amplitude greater than a first threshold, a number of times of a strong brushing with a brushing force greater than a second threshold and of a number of times of a horizontal brushing; determining a number of overtime-brushed tooth surfaces brushed for more than a standard brushing time, a number of times of tooth surfaces brushed at a high amplitude, a number of times of strongly-brushed tooth surfaces and a number of times of horizontally-brushed tooth surfaces according to the brushing time.