We　estimated　the　equivalent　water　height　(EWH)　over　Qinghai-Tibet　Plateau　(QTP)　from　time-variable　gravity　field　models　derived　from　the　Gravity　Recovery　and　Climate　Experiment　(GRACE)　data　released　by　CSR,　JPL,　GFZ,　and　GRGS.　EWHs　calculated　from　CSR,　GFZ,　JPL,　and　GRGS　models,　respectively,　were　taken　as　the　observed　signals,　and　the　corresponding　4　independent　source　signals　of　each　observed　signal　were　determined　by　independent　component　analysis　to　remove　the　north-south　stripe　errors　and　identify　the　fourth　independent　components　as　meaningful　water　storage　change　(WSC)　signals.　These　interesting　signals　are　highly　correlated　to　those　predicted　by　hydrological　models　such　as　CPC　and　GLDAS　with　the　maximum　and　minimum　correlation　coefficients　of　0.89　and　-　0.5,　respectively.　The　result　shows　that　EWHs　over　QTP　wholly　have　the　rising　trend　with　the　mean　rate　of　WSC　of　greater　than　0.7　mm/year.　The　in　situ　precipitations　on　140　meteorological　stations　are　also　analyzed　to　verify　the　water　storage　changes　determined　from　GRACE　data.　The　results　indicate　that　precipitation　is　one　important　water　source　to　replenish　the　groundwater　in　QTP.