The invention relates to a pouring system for an electric control cabinet. The pouring system for the electric control cabinet is characterized in that the system comprises a sand box, a sand mold and a sand core set; the sand box, the sand mold and the sand core set placed inside the sand mold constitute a pouring cavity together; and the sand core set corresponds to the cavity. According to the pouring system for the electric control cabinet, the sand core set and the sand mold are combined to serve as a casting of the electric control cabinet, a hollow-type sand core structure is adopted, and thus sand cores are portable. Moreover, the using amount of sand is decreased, and the cost can be reduced. The reasonable parting position is selected, the assembling number of the sand cores is minimized under the condition that loose pieces are reduced, and therefore the pouring production process of the electric control cabinet is simplified.