LECR3 (Lanzhou Electron Cyclotron Resonance ion source No.3) which aims to produce intense highly charged ion beams for atomic physics research, was designed and constructed based on LECR2 (Lanzhou Electron Cyclotron Resonance ion source No.2) with high B mode. In year 2003, according to the arrangements of atomic physics research experiments and the ECR ion source research activities, ion beams of 14 elements were produced on LECR3. The elements include 16O, 40Ar, 129Xe, 63Cu, 65Zn, 56Fe, 58Ni, 26Mg, 208Pb, 35Cl, 37Cl, 28Si, 84Kr and 181Ta. Many of them were tested for the first time on LECR3 ion source. LECR3 (Lanzhou Electron Cyclotron Resonance ion source No. 3) which aims to produce intensely charged ion beams for atomic physics research, was designed and constructed based on LECR2 (Lanzhou Electron Cyclotron Resonance ion source No. 2) with high B mode. In year 2003, according to the arrangements of atomic physics research experiments and the ECR ion source research activities, ion beams of 14 elements were produced on LECR3. The elements include 16O, 40Ar, 129Xe, 63Cu, 65Zn, 56Fe, 58Ni, 26Mg, 208Pb , 35Cl, 37Cl, 28Si, 84Kr and 181Ta. Many of them were tested for the first time on LECR3 ion source.