We　have　developed　an　atomizing　device　to　prepare　Cu-Ag　alloy　particles　by　adjusting　the　main　atomizing　parameters.　With　the　help　of　body　phase　microscope　and　XRD(X-ray　diffraction),　the　morphology　and　phase　of　atomizing　particles　were　observed　and　tested　to　understand　effects　of　the　main　atomizing　parameters　on　particle　size　and　morphology.　The　results　show　that　atomizing　particles　exhibit　mainly　spherical　or　near-spherical　structure.　Ag　has　preferably　dissolved　into　Cu　and　not　separated　into　the　single　phase.　The　suitable　atomizing　parameters　for　preparing　Cu-Ag　alloy　particles　with　150　-　900　μm　were　presented　as　follows:　package　leakage　aperture　of　3.6　-　4.1　μm,　pouring　temperature　of　1578　-　1591°C　and　atomizing　pressure　of　3.0　-　3.4　MPa.