There are two same 10 MeV proton cyclotrons, which had been constructed in IMP. On July 2004, the first tune of the first cyclotron was fault. Beam was not available. The main reason was that the microwave ion source could not work properly with rf system of the cyclotron and the Dee voltage could not reach 30 kV, which was the designed value. For the second cyclotron, the construction of magnet system and power supply system had been completed. To get beam successfully from the cyclotrons, some im- There are two same 10 MeV proton cyclotrons, which had been constructed in IMP. On July 2004, the first tune of the first cyclotron was fault. Beam was not available. The main reason was that the microwave ion source could not work properly with rf system of the cyclotron and the Dee voltage could not reach 30 kV, which was the designed value. For the second cyclotron, the construction of the magnet system and power supply system had been completed. To get beam successfully from the cyclotrons, some im-