Abstract: With the development of pulse power technology to high repetition rate and long life, it is necessary to test the stability of energy storage and switching components under transient intense field. This paper presents a solid-state platform for transient intense field test at several tens kilovolts with charging and discharging time in microsecond region. The platform consists of a high voltage power supply, a primary unit, a core-type pulse transformer, a magnetic compression network, core reset power supplies and a test cavity, hence it has an integrated structure and is easy to use. A circuit model is presented to optimize the electrical parameters of the platform. Then, the test platform is built up and experimented. A group of serial connected thyristors are used as control switch in the primary unit for pulse charging and high power magnetic switch is used for discharging in the test cavity. Preliminary results are obtained with ceramic capacitors of 40 nF under test, of which the test voltage is 50 kV, the pulse width is 1 μs with repetitive rate of 10 Hz and operation time of 85 min (51 000 pulses), indicating the platform is stable and reliable. The research results could setup good foundation for further investigation into related test.