The invention relates to method and production line for rapidly preparing aerogel through radio frequency radiation. The aerogel production line comprises a main machine for rapidly preparing the aerogel through radio frequency radiation, an original auxiliary material system, an inert gas system, a heat supply system, a recovery system and a three-waste treatment system. The main machine for rapidly preparing the aerogel through radio frequency radiation comprises a sol-gel station, an ageing station, a replacement modification station and a drying station. The main machine is provided with a radio frequency generator, a monitoring device and an automatic control device. The main machine is provided with an inner container which is through front and back, a crawler is arranged in the inner container and used for material conveying, a channel is formed in the inner container and can be communicated with or disconnected from other systems outside the main machine. Multiple forms of products such as aerogel powder, aerogel particles, aerogel felt, aerogel plates, aerogel cloth and aerogel films can be continuously produced, the extremely high production efficiency and automation degree are achieved, the aerogel industry is powerfully promoted to achieve production automation, large scale and intelligence.