This paper reviews the synthetic routes and application of 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd). In terms of the synthetic routes, the route to synthesize HCFO-1233zd(E) with 1,1,1,3,3-pentachloropropane (HCC-240fa) as raw material through gas phase fluorine-chlorine exchange has easy access to raw materials, high conversion rate, high selectivity and industrial value; the route of HCFO-1233zd(Z) synthesis by gas phase isomerization using HCFO-1233zd(E) as raw material not only has the advantages of long catalyst life and high target product selectivity, but also it is easy to realize industrialization. In terms of application, HCFO-1233zd(E) is mainly used as foaming agent and heat transfer fluid, HCFO-1233zd(Z) is mainly used as cleaning agent. It is proposed that the future research focuses in the field of HCFO-1233zd are the development of high-activity non-chromium catalysts and the development of new application technologies for HCFO-1233zd.