The invention provides an automatic guided dual-lidar control method and system and a positioning method. The method comprises the steps that two sets of distance data of two lidars arranged on an automatic guided vehicle are acquired respectively; two lidars include a first lidar and a second lidar, and two sets of distance data include a first set of distance data and a second set of distance data; based on at least one set of distance data in two sets of distance data of two lidars, whether the first lidar is in a radar dead zone is determined; and the operation mode or signal processing mode of at least one lidar in two lidars is controlled according to the status of the blind zone in which the first lidar is located. According to the invention, in the navigation process of the automatic guided vehicle, enough information are collected by two lidars; the operation mode and/or signal processing method of two lidars is controlled to reduce the time of blindness of the AGV; the autonomous navigation accuracy and intelligence of the AGV are improved; and the work efficiency is improved.