The invention discloses a text similarity calculation method, system and equipment based on unsupervised learning and a medium, and the method comprises the steps: obtaining a training set, taking each text in the training set as the input of an abstract generation network, obtaining an abstract corresponding to each text, and forming a text set and an abstract set; establishing a similarity calculation network; training the similarity calculation network by adopting the text set and the abstract set; and inputting the two to-be-processed texts into the trained similarity calculation network,and outputting the similarity of the two texts. According to the method, training and learning can be carried out without manually marked pairing data, so that the data acquisition cost is greatly reduced.