The government tried to reconcile the incident but it failed, so in 940 FUJIWARA no Tadafumi was appointed as Seii Raishogun (literally, "great general who subdues the barbarians") to send the troops to defeat Masakado, FUJIWARA no Hidesato subjugated Masakado.
懐柔策を試みたがうまくいかず、天慶3年（940年）、藤原忠文を征夷大将軍に任命して将門征伐軍を送り、藤原秀郷の手により将門は討たれた。