The invention discloses a recycling device and a recycling method for tail gas from a calcium carbide furnace. The recycling device for the tail gas from the calcium carbide furnace comprises a dust removing device, a pressurizing device and an EDC cracking device which are sequentially connected by a pipeline. The recycling method for the tail gas from the calcium carbide furnace comprises a dustremoving procedure, a pressurizing procedure, a desulfurization procedure and a combustion procedure in sequence. The recycling device and the recycling method for the tail gas from the calcium carbide furnace, disclosed by the invention, disclose a novel technology for recycling the tail gas from the calcium carbide furnace; by means of the novel technology, dust particulate matters and sulfidein the tail gas from the calcium carbide furnace are effectively removed, the tail gas subjected to earlier-stage treatment is used as a fuel for EDC cracking, and sufficient recovery and comprehensive utilization of the tail gas from the calcium carbide furnace are realized, so that the problems of pollution abatement of the tail gas from the calcium carbide furnace and energy recycling are solved; a downstream product structure of the tail gas from the calcium carbide furnace is enriched, huge economic benefits and social benefit are obtained and energy saving, emission reduction and sound development of the calcium carbide industry are promoted.