To meet the demand of plasma discharge, pulse inductor should be connected to the vertical field power supply to change the output current parameters. To satisfy the need of the output current of the vertical field power supply of the TT-1 device, pulse inductor was designed and developed. According to the operating conditions and parameters of the inductor, the detailed mathematical analysis and structural design were carried out by the induction coefficient method and cumulative temperature rise method. Based on the theoretical design, an Ansys simulation model was established to study the magnetic field and temperature rise of the inductor. Finally, the inductor was developed. According to the bridge measurement and experimental waveform, the actual inductance parameters agree well with the theoretical analysis. The experiment of fatigue and temperature was carried out on the inductor under the condition of high current to verify the reliability of the theoretical design.