The invention provides a predictive outbound method and system of a call system. The method comprises the following steps: a call service module starts to call a seat, judges how many customer service staff participating in the call in the present turn, and obtains the number n of the customer service staff participating in the call; and a call scheduling main module judges the time T1m=n-1-x of the customer service seat for call to answer according to the historical record of the call, wherein m refers to idle customer service staff, 1 refers to busy customer service staff and x refers to overtime customer service staff. According to the predictive outbound method of the call system provided by the invention, if the customer service staff is the same, the call efficiency is improved, the waiting times of the customer service staff are shortened, various call states are fully predicted, the call system can be called according to predicted data, various states of the call system can be fully distinguished in a prediction condition, call resources are fully matched, unreasonable personnel match is maximally reduced, resources are saved, the call cost is lowered, and the user experience is improved. The invention provides a call system.