介绍了一个脉冲束流调制器。它是为了满足部分重离子核物理研究工作和加速器的研制与改进工作所需要的特定的脉冲束流而研制的。现已成功地用于重离子加速器的ＥＣＲ源的束运线上 A pulse beam modulator is introduced. It is to meet some heavy ion nuclear physics research work and accelerators to develop and improve the work required by the specific pulsed beam developed. It has been successfully used to transport the ECR sources of heavy ion accelerators