Provided are a conveyance chain and a chain conveyance device. The conveyance chain comprises an inner chain plate, an outer chain plate and a pin spindle connecting the inner chain plate and the outer chain plate. One end of the pin spindle extends to be connected with a connecting shaft which is integrated with the pin spindle. As a part of the conveyance chain, the connecting shaft is assembled with the chain before the chain is processed, and is processed with the chain. The conveyance chain and the connecting shaft are integrated after being processed. The connecting shaft is as strong as the chain. For one thing, the connecting shaft can connect the chain, and for another, the connecting shaft can be used for the hang of stuff. The connecting shaft is processed by the same craft as the chain so that the connecting shaft is quite strong and does not break easily in hang conveyance and can bear hang conveyance of heavy stuff.