A new all permanent ECR (Electron Cyclotron Resonance) ion source LAPECR2 (Lanzhou All Permanent ECRIS No. 2) is now under developing in IMP. This source will be used to set up on the IMP 400 HV (High Voltage) platform. This HV platform aims to deliver high ion beams from low charge state to very high charge state, so the rigorous requirement to this ECRIS is obvious. To satisfy this requirement, the ion source is designed to be a very large one, which has very large volume plasma chamber, larger ECR length and mirror length, and very strong 3 -dimension magnetic field. The detail parameters, are shown in Table 1 listed below.The outer dimension of the magnetic blocks is φ520 mm×510 mm, which turns out to be a very large one A new all permanent ECR (Electron Cyclotron Resonance) ion source LAPECR2 (Lanzhou All Permanent ECRIS No. 2) is now under developing in IMP. This source will be used to set up on the IMP 400 HV (High Voltage) platform. This HV platform aims to deliver high ion beams from low charge state to very high charge state, so the rigorous requirement to this ECRIS is obvious. chamber, larger ECR length and mirror length, and very strong 3 -dimension magnetic field. The detail parameters, are shown in Table 1 listed below. The outer dimension of the magnetic blocks is φ 520 mm × 510 mm, which turns out to be a very large one