Bond strength is a key property to evaluate quality of cladding layer. According to the thickness of the cladding, surface cladding layer can be classified into two categories: thick and thin layer. The later is usually called thin film. Bond strength includes static and dynamic bond strength. As to thick cladding layer, main measuring methods of static bond strength are sticking extension method, interfacial indentation method, shearing method, fracture mechanics method. Contact fatigue method is the main measuring method of dynamic bond strength. As to thin film, main measuring methods of static bond strength are extension method, scratching method, indentation method, scraping method, bulge blister method, laser spallation method and so on. The main measuring methods of dynamic bond strength are facing contact rolling method and ball contact rolling method. The paper made overview on all above methods.