The purpose of researching CCTV system of port based on LTE is to use advanced technology solutions for the wireless transmission of video in the difficult environment of the port area.The LTE uses a variety of key technologies and adjustment of the network structure to achieve a high bandwidth,low-cost wireless data transmission.The LTE is the inevitable choice for the ship and port security monitoring.This article focuses on the network structure of LTE and the transmission technology of LTE.By comparison with other wireless transmission means,this paper analyze its application advantages in video monitoring system in harbor.