A dust removal method for container filling of polyvinyl chloride powder comprises four steps: first, connecting a dust remover, that is to say connecting a dust removal line to an exhaust port of a container; second, starting a fan, for the exhaust port of the container, producing vacuum in the dust removal line along with starting of the fan to suck the dust from the container into the dust removal, charging the dust into a dust removal tank along the line, and intercepting the dust by a cloth bag in the dust removal tank; third, starting a gas distribution table exhaust valve set, starting a gas valve set to purge the cloth bag periodically with airflow along with a time controller when dust accumulates on the cloth bag, separating the dust from the cloth bag, and charging the dust into a storage bag along a discharge valve; fourth, turning off equipment, that is to say after filling, stopping the fan and closing the gas distribution table exhaust valve set. Through the above method, it is possible to prevent the dust from dispersing during a filling process, improve filling efficiency, improving container filling conditions and protect the environment. The method has the advantages such as low equipment quantity, high dust removal efficiency, operational convenience, and energy conservation and consumption reduction.