During the Third Taiwan Strait Crisis in the end of 1962,a large-scale emergent war preparation was initiated by the People's Liberation Army in coastal regions in Southeast China in order to defend Kuomintang's attack of the mainland. In order to offer full support to this war preparation,Guangdong Province also mobilized a large-scale Assist-the-Front movement. It contributed greatly to the final success of this war preparation,which led to a peaceful end of this crisis. Guangdong Provincial Government also learnt important experiences for domestic mobilization from this movement that explained its outstanding performance in the Third Front Construction two years later.