Based on the characteristics of magneto-optical switch, such as fast switching speed, high reliability, and low cross talk, a time division multiplexing solid-state lidar based on a fiber magneto-optical switch is proposed. First, the working principle and properties of the time division multiplexing solid-state lidar based on a fiber magneto-optical switch are discussed and examined, and the performance indexes of the magneto-optical switch related to the performance of lidar are tested, including delay time, switch rising edge time, insertion loss, and return loss. Then, a time division multiplexing solid-state lidar system was constructed based on the 1 × 8 optical fiber magneto-optical switch. A time-of-flight (ToF) ranging technology was used to quickly achieve three-dimensional (3D) imaging of the lidar by switching the optical path to the fiber channel at various locations of the two-dimensional beam array. Finally, the 3D point cloud map of the measured object was built in the experiment to confirm the system's all-solid-state 3D imaging capability. The scanning frequency of 510.3 Hz and angular resolution of 0.36° are achieved, and the angular resolution is increased to 0.18° by the microjitter translation platform. The developed technique has advantages over micro-electro-mechanical system (MEMS) and optical phased array beam imaging technology, including low cost, high energy utilization, and good beam quality.