The present invention provides a method and device of wireless communication network reselection based on a LTE (Long Term Evolution) and terminal. The method comprises: after a terminal is subjected to off line from a high-speed private network to a public network out of the high-speed private network, determining whether the terminal is located in a high-speed mode or not; if the terminal is located in the high-speed mode, scanning one or more than one different frequency points through a punching mode while receiving the business of the current frequent points to determine whether the different frequency points belong to the high-speed private network or not; and if the different frequency points belong to the high-speed private network, switching the terminal to the different frequency points. The method and device of wireless communication network reselection based on the LTE and the terminal scan different frequency points through the punching mode to perform searching and connection of the high-speed private network frequency points while the terminal does not influence the current network frequency point business processing so as to improve the business processing speed and performance of the terminal in the LTE network mode and improve the user experiment.