The present invention relates to a separation and recovery method of chloroethylene in tail gas of a process for production of the chloroethylene by acetylene and dichloroethane mercury-free catalytic synthesis, dichloroethane as an absorbent is used for spray absorption of the chloroethylene in noncondensable gas from compression condensing section of the process for production of the chloroethylene by acetylene and dichloroethane mercury-free catalytic synthesis, then the dichloroethane absorbing the chloroethylene is rectified and separated to use as a raw material for the process for production of the chloroethylene by acetylene and dichloroethane mercury-free catalytic synthesis, and the method has simple process, low energy consumption, easy operation and low running cost, and is particularly applicable to a reaction device for producing the chloroethylene from the dichloroethane as the raw material.