Low-level wind shear has been recognized as one kind of dangerous weather for aviation. To study the 1.55 μm wind lidar′s detection capabilities for low-level wind shear, a typical process of low-level wind shear caused by thunderstorm gale has been analysed by using data from FC-III wind lidar and Doppler weather radar. FC-III wind lidar adopts pulse coherent system and all fiber structure. A combined scanning strategy was implemented to achieve detection of wind shear which includes Doppler-beam-swinging (DBS) scan, plan-position-indicator (PPI) scans at the tangles of 4-and 6-degree, range-height-indicator (RHI) scans, and glide-path (GP)scans. Results demonstrate that the combined scanning strategy can effectively detect the three stages of low-level wind shear: vertical shear of horizontal wind in the environment before the thunderstorm gale, horizontal wind shear caused by the gusty front, and vertical shear of horizontal wind caused by the gale behind the gust front. The study shows that the vertical and horizontal structure and evolution of low-level wind shear can be clearly detected during these stages. Utilizing the combined scanning strategy, forecasters can provide an early warning for this wind shear 5 minutes in advance.