A laser-diode-pumped 1.54-μm passive Q-switched erbium doped glass laser was reported. We utilize a laser diode with wavelength of 973 nm to pump a 1-mm Er/Yb co-doped phosphate glass with the erbium and ytterbium concentrations of 1 wt.% and 21 wt.%, respectively. A Co2+:MgA12O4 slab crystal was used as a passive Q-switcher. Q-switched pulses with repetition frequency of 800Hz, width of 7.4ns, peak power of 2.2kW and average power of 13.3 m W were obtained when absorbed pump power was 475 mW. A sandwich structure of the Q-switched microchip Er/Yb glass laser was demonstrated, which shows shorter pulse width of 6. 8 ns. Dependencesof pulse duration and repetition frequency on pump power were also investigated.