The　mental　health　of　college　students　not　only　directly　affects　their　own　growth,　but　also　affects　the　stability　of　the　campus,　and　then　affects　the　harmony　of　the　society　and　the　improvement　of　the　quality　of　the　people.　This　phenomenon　has　attracted　great　attention　from　the　society.　At　present,　there　are　many　researches　on　the　mental　health　education　system　of　college　students,　which　need　to　be　strengthened.　This　thesis　expounds　the　psychological　problems　of　contemporary　college　students　and　the　main　tasks　of　data　mining　technology.　Through　the　investigation　and　analysis　of　the　current　development　needs　of　college　students＇　mental　health　education　in　my　country,　it　is　concluded　that　the　mental　health　education　system　of　college　students　in　my　country　needs　to　be　improved.　The　results　of　the　experiment　found　that　more　students　will　have　negative　emotions　such　as　depression　and　anxiety,　13.5%　of　the　severely　depressed　and　20.1%　of　the　severely　anxious.　These　emotions　will　affect　their　study,　work　and　quality　of　life,　and　change　their　psychology.　©　2021　IEEE.