This　research　examines　the　PPP　time　transfer　outcomes　under　various　cut-off　elevation　angles　in　an　effort　to　increase　the　precision　and　stability　of　PPP　time　transfer.To　determine　the　local　receiver　clock　error,　PPP　processing　is　first　performed　on　the　combined　observation　of　the　undifferenced　dual-frequency　ionosphere-free　pseudorange　and　carrier　phase　at　BRUX,　PTBB,　USN7　and　other　stations　using　the　precise　products　of　Wuhan　University.Then　subtract　the　receiver　clock　error　between　the　two　locations　in　the　IMEJ-PTBB,　OP71-BRUX　and　other　links　to　complete　the　time　transfer.Finally,　the　Modified　Allan　Deviation　and　Time　Deviation　is　adopted　to　evaluate　the　stability　of　the　time　transfer.　Experiments　show　that　the　time　transfer　results　and　stability　of　high　cut-off　elevation　angle　are　also　good,　which　can　reduce　the　dependence　on　the　environment.The　effects　of　the　multipath　effect　is　somewhat　less　as　the　cut-off　elevation　angle　is　increased.The　cut-off　elevation　angle　is　typically　set　as　low　as　possible　in　practical　situations　to　maximize　the　use　of　observation　data.The　study＇s　findings　offered　an　invaluable　guide　for　choosing　the　cut-off　elevation　angle　for　PPP　time　transfer.　©　2022　IET　Conference　Proceedings.　All　rights　reserved.