With the recent development in particle synthesis a large variety of nanoparticles, characterized by different surface properties and shapes, can be generated. Now, besides copolymers, adding nanoparticles is taken to be an effective and economic alternative to the conventional method of compatibilizing polymer blends by copolymers. Particularly, the surface properties of nanoparticles manipulate their positional distribution inside the polymer blends, and hence offer a high control for engineering polymer nanocomposite with desired structures and properties. Although recent studies have shed more light onto the close relation between surface chemistry of NPs and their compatibilizing capability in polymer blends, the understanding of how NPs control the miscibility behavior and the morphology of polymer blends is far from complete. Additionally, in many polymer-processing operations, shear flow is usually involved. Shear flow can affect the phase transitions and induce mixing or demixing by shifting the phase boundaries, which improves or weakens the component compatibility and also changes the morphology as well as stability of the domain, due to the complex coupling between kinetics, thermodynamics, hydrodynamics, and viscoelasticity. In comparisons to researches in the area of the traditional ternary blends (two immiscible homopolymers and one copolymer), investigations on the effect of shear flow on the behaviour of phase-separating homopolymers containing nonoparticles are rather scarce. Considering the differences between copolymers and nanoparticles, introducing nanoparticles into an immiscible polymer blend could make the phase behaviour under flow more complex as these particles can be selectively located in the homopolymer phases or at the interface depending on their surface chemistry. Therefore, the ternary blends containing nanoparticles with different surface chemistry or shapes are highly interesting systems to study. Knowledge of the response of these systems to shear flows opens up possibilities for the rational design and fabrication of ordered nanostructures and advanced nanocomposites..