An optoelectronic morphological system using Fourier holographic filter is introduced,in which all the basic operations of dilation,erosion,opening,and closing of an image about its construction element are executed based on the convolution of the image with the construciton element by Fourier holography.A computer controlled electronically addressed SLM is employed in the iteration process.The system is simple in construction,easy for multiple iteration,design and exchange of the construction element,and using computer generated hologram,as well as printing the output by computer directly.