Abstract: The paper first analyzed the causes and mechanisms of black-odour in urban rivers, then provided a review on the achievements on methods and approaches for black-odour evaluation. A number of black-odour assessment models were collected together and then compared with each other. Four widely used models: the multiple linear regression model, the organic pollution index model, the multi-factor weighted index model and the comprehensive water quality identification index model were selected and analyzed. The trend of evaluation model building on black-odour in urban rivers was prospected in the end.