The　amplified　spontaneous　emission　(ASE)　light　source　at　1　μm　was　used　to　excite　Yb3+/Er3+　co-doped　silica　(YEDS)　microspheres　by　evanescent-wave　coupling　through　a　taper　optical　fiber　(TOF)　to　generate　a　stable　1550　nm　laser.　Inevitably,　the　experimental　process　was　accompanied　by　a　frequency　up-conversion　luminescence　whose　fluorescence　spectrum　was　collected　and　analyzed.　Pumped　by　the　ASE　light　source　with　different　power,　the　system　of　YEDS　microsphere　and　TOF　also　generated　single-mode　laser　and　multi-longitudinal　mode　laser.　Their　peak　wavelength,　output　power　of　the　peak　laser,　full　width　at　half　maximum　(FWHM),　and　side　mode　suppression　ratio　(SMSR)　were　respectively　measured.　Moreover,　the　characteristics　of　a　1550　nm　whispering　gallery　mode　(WGM)　laser　excited　by　a　1　μm　ASE　pumping　and　a　tunable　laser　(TLS)　pumping　were　compared　under　different　variable　conditions.　It　was　demonstrated　that　the　ASE　pump　source　has　polarization　in　all　directions　to　excite　WGMs　in　the　microsphere　cavity,　which　was　different　from　and　superior　to　the　TLS.　Therefore,　the　laser　generated　by　the　ASE　pump　source　as　an　excitation　source　was　not　affected　by　vibration　and　temperature　change.　The　results　show　that　the　1550　nm　laser　pumped　by　ASE　can　stably　output　the　microsphere　WGM　mode　laser　under　the　interference　of　vibration　and　temperature　change,　which　is　more　suitable　for　the　actual　application　environment.　©　2021　Institute　of　Physics　Publishing.　All　rights　reserved.