A vibration isolator with relaxation type damping was proposed for micro-vibration isolation from satellite remote sensors to get better high frequency attenuation rate as well as the resonance control capacity. A vibration isolation model of the relaxation type viscous damping was established. The absolute transmissibility of the vibration isolator model with relaxation type damping was deduced and compared with that of a traditional Kevin vibration isolation model. The vibration isolator with relaxation type damping was designed by adopting a bellow as spring and an elongated hole to generate damping force. The damping coefficient was solved analytically for the designed structure. The transmissibility experiment for the vibration isolator was conducted. According to the experimental results, it shows that the vibration isolator with relaxation type damping provides a high damping force at the resonance frequency, which controls resonance amplification factor to be with two times. Moreover, it provides a low damping force at the higher frequency, which allows the vibration attenuation at 100 Hz to be over 95%. These results are identical to that of the theoretical prediction and demonstrate that the performance of proposed Vibration isolator is superior to that of traditional ones. The research on vibration isolator with relaxation type damping can be as a good instruction to design and apply such kind of vibration isolator in satellite remoter vibration isolation fields.