The onion router （Tor） anonymous communication system is used by criminals to engage in criminal activities on the dark networks， which brings severe challenges to social security. Tor website traffic is captured and analyzed by Tor website traffic analysis technology and therefore illegal behaviors hidden on the internet are timely discovered to conduct network supervision. Based on this， a Tor website traffic analysis model based on Self-Attention and Hierarchical SpatioTemporal （SA-HST） features was proposed on the basis of self-attention mechanism and spatiotemporal features. Firstly， attention mechanism was introduced to assign different weights to the network traffic features to highlight the important features. Then， Convolutional Neural Network （CNN） with multi-channel parallel structure and Long Short-Term Memory （LSTM） network were used to extract the spatiotemporal features of input data. Finally， Softmax function was used to classify data. SA-HST can achieve 97.14% accuracy in closed world scenario， which is 8.74 percentage points and 7.84 percentage points higher compared to CUMUL（CUMULative sum fingerprinting） model and deep learning model CNN. In open world scenario， SA-HST has the evaluation indicators of confusion matrix above 96% stably. Experimental results show that self-attention mechanism can achieve efficient feature extraction under lightweight model structure. By capturing important， multi-view spatiotemporal features of anonymous traffic for classification， SA-HST has certain advantages in terms of classification accuracy， training efficiency and robustness.