The present invention discloses a transmission line easy-to-waving meteorological condition forecasting method based on an SVM classifier. The transmission parameters and the meteorological parameters of the waving frequent occurrence area in history are excavated, and the meteorological parameters are taken as input quantity to establish an SVM classifier in the meteorological element accumulation effect process and predicate whether the easy-to-waving meteorological condition is satisfied or not. The output easy-to-waving meteorological condition forecasting result can provide a decision support for power grid operation and maintenance staffs to facilitate making pointed wind resistance, deicing and waving prevention measures in advance so as to guarantee the safe operation of the transmission line.