PURPOSE: To improve the earthquake-resistant property of a bushing for high voltage by arranging an earthquake damping body having a spring and a damper between a bushing main body and a tubular base, and specifying the relationship of respective mass, spring constant, frequency, and damping factor.

CONSTITUTION: An earthquake damping body A having a spring and a damper is arranged between a bushing main body 10 and a tubular base 11. When the natural frequency of the bushing main body 10 is denoted as f2, the mass of the bushing main frame 10 as m2, the spring constant of the earthquake damping body A as k1 and the damping constant of the earthquake damping body A as C1, the relationship thereof is constituted so that the frequency (f) of the bushing expressed by (f)=(1/2.π) (k1/m2) 1/2 satisfies (f)<1.8 f2, and a damping factor (h) of the bushing expressed by (h)=c1/{2(m2.k1)1/2} satisfies (h)>0.5. The vibration of the bushing main body is thereby reduced in comparison with the conventional technique of isolating the vibration of the whole equipment, and the relative displacement at a connection part with peripheral equipment is reduced to obtain the high earthquake-resistant property.