The invention relates to a Carsim based fuzzy comprehensive evaluation method for traffic safety of a passenger car at a bend road section. The method comprises steps as follows: a value strategy table of a travel speed, a circular curve radius and a resultant gradient is listed firstly; an orthogonal experiment value strategy table is obtained according to values, in the value strategy table, of an orthogonal experiment table, a model is established in Carsim, and data are output; a critical adhesion coefficient corresponding to each group of data is calculated, and weight vectors of the travel speed and the circular curve radius are calculated; a regression model of the critical adhesion coefficients, the travel speed and the circular curve radius is established, a regression model of road adhesion coefficients and the travel speed is established, a danger level division basis is determined, and a single-factor evaluation matrix is calculated; normalized comprehensive evaluation is obtained through calculation of the weight vectors and the single-factor evaluation matrix, a coefficient matrix of danger evaluation coefficients is determined, a comprehensive evaluation coefficient matrix is obtained through calculation, and the travel safety of the bend road section is judged. The method depends on a simulation means, and the road safety condition can be analyzed at the design stage.