In this paper the direct and indirect Yb3+ sensitized up-conversion luminescence of 1G4 level of Tm3+ ion in Tm0.03Yb0.18La0.79P5O14 and Tm(0.1)Yb(3)∶ZBLAN glasses is reported. The results indicate that the upconversion luminescence intensity in the pentaphosphate glass is much enhanced and nearly comparable to that in the ZBLAN glass when the glass is excited by the indirect upconversion sensitized method. This work and the results may promote the upconversion research to practical application.