The invention provides a continuous delay coking device and a continuous delay coking method. The method comprises the following steps that: oil gas generated by a delay coking reactor is introduced into a fractionate tower from the top of the reactor, and the coke obtained by the reaction is stripped with steam and stays for 6-18 h in the reactor and then continuously flows out from the bottom of the reactor and introduced into a coke quench tower or is directly used for gasifying raw material; and the high temperature coke is introduced into the quench tower filled with water, the coke is cooled and introduced into a drain sump or a centrifuge with cooling water, the dehydrated coke is delivered to a feed bin through a belt, water vapour obtained by heat absorption and vaporization in the quench tower is subject to self-pressure heat exchange or condensing and cooling, and the condensed water is recycled. According to the invention, processing capability and liquid product yield of the device are improved, the adaptability to raw material of low quality is improved, the energy consumption and investment of the device are reduced, the occupied area is reduced, the pollution is reduced, the service life of the device and pipelines is prolonged, the potential safety hazard of coke tower shaking and the like caused by shot coke production by the traditional delay coking device is prevented, and strong adaptability to raw material is achieved.