Abstract: In order to obtain the non-stationary subdivision scheme unifying interpolation and approximation,three different non-stationary four-point binary blending subdivision schemes are constructed according to the relationship between the non-stationary interpolating four-point subdivision scheme and cubic exponential B-spline subdivision scheme. Among them are a non-stationary approximating subdivision scheme based on non-stationary interpolating subdivision, a non-stationary interpolating subdivision scheme based on non-stationary approximating subdivision, and a non-stationary blending subdivision scheme that integrates interpolating and approximating. Many existing interpolating subdivision schemes and approximating subdivision schemes are special cases of the proposed blending subdivision schemes. The schemes are explained geometrically, and some properties of the schemes are analyzed such as Ck continuity, the exponential polynomial generation and reproduction. Numerical examples show that the proposed blending subdivision scheme can be used to control the shape of limit curves by selecting appropriate parameters.