Abstract　 　　  

   Weak gravitational lensing is an important probe of the properties of our Universe. However, the measurement of the weak lensing effect (i.e., cosmic shear) is challenging due to the presence of the point-spread-function, noise, finite pixel size, etc.. I will introduce a cosmic shear measurement method in Fourier space, which removes the systematic errors in a model-independent way. I will show some preliminary results using the CFHTlens data.