With the technological developments of cryoelectron microscope, X-ray diffraction and the growing data available on various components of ribosome, some marvelously intricate structural models of the Escherichia coli 70S ribosome have been reconstructed. The picture of the ribosomal model are detailed, including the placement of the mRNA, the arrangement of the A-site and P-site tRNAs and the peptidytransferase within the interface gap as well as the path of nascent polypeptide chain, which results in a better understanding of the structure and function of ribosome as well as the translational process.