Efficient implementation of block cipher is critical towards achieving high efficiency with good understandability. Numerous number of block cipher including Advance Encryption Standard have been implemented using different platform. However the understanding of the AES algorithm step by step is very typical. This paper presents the efficient implementation of AES algorithm and explain Avalanche effect with the use of MATLAB platform. Mainly use of MATLAB in Algorithm development, data analysis, exploration, visualization, modeling, simulation, prototyping, application development including GUI building and computation.