A foreign matter removal system for track branch parts , comprising: a plurality of foreign matter removal devices which are each disposed at a track branch part to remove foreign matter in the vicinity of the track branch part with air injection, and are configured to be switchable among a plurality of operation modes; and a control center which is configured to change the operation modes of the plurality of foreign matter removal devices based on an operation state of a train, wherein the plurality of operation modes includes: a retry injection operation mode in which compressed air is injected prior to another shifting operation of track branch parts in case the another shifting operation is performed after shifting operation fails; a preventive injection operation mode in which compressed air is injected in case detecting a passage of train regardless of shifting operation; a pre-shifting injection operation mode in which compressed air is injected prior to shifting-operation; an intermittent injection operation mode in which compressed air is injected at a predetermined time interval regardless of shifting operation; and any combination of the operation modes, and wherein the operation state of the train includes at least information on a quantity of snow accreted to the train, the control center being configured to change the operation modes of a foreign matter removal device , which is disposed on a rail line on which the train is going to travel, based on the information on the quantity of snow accreted to the train, which is feed-forwarded to the control of said foreign matter removal device . a plurality of foreign matter removal devices which are each disposed at a track branch part to remove foreign matter in the vicinity of the track branch part with air injection, and are configured to be switchable among a plurality of operation modes; and a control center which is configured to change the operation modes of the plurality of foreign matter removal devices based on an operation state of a train, wherein the plurality of operation modes includes: a retry injection operation mode in which compressed air is injected prior to another shifting operation of track branch parts in case the another shifting operation is performed after shifting operation fails; a preventive injection operation mode in which compressed air is injected in case detecting a passage of train regardless of shifting operation; a pre-shifting injection operation mode in which compressed air is injected prior to shifting-operation; an intermittent injection operation mode in which compressed air is injected at a predetermined time interval regardless of shifting operation; and any combination of the operation modes, and wherein a retry injection operation mode in which compressed air is injected prior to another shifting operation of track branch parts in case the another shifting operation is performed after shifting operation fails; a preventive injection operation mode in which compressed air is injected in case detecting a passage of train regardless of shifting operation; a pre-shifting injection operation mode in which compressed air is injected prior to shifting-operation; an intermittent injection operation mode in which compressed air is injected at a predetermined time interval regardless of shifting operation; and any combination of the operation modes, and wherein the operation state of the train includes at least information on a quantity of snow accreted to the train, the control center being configured to change the operation modes of a foreign matter removal device , which is disposed on a rail line on which the train is going to travel, based on the information on the quantity of snow accreted to the train, which is feed-forwarded to the control of said foreign matter removal device . <EOS>