To provide a strut insulator structure having a long life by preventing the insulator from being cracked or broken while reducing costs and weight thereof.

This strut insulator structure comprises a support member 3 provided on the top of a strut rod 1, elastic members 4 having upper and lower projecting parts 4a for elastically supporting the support member 3, and brackets 5 having two upper and lower members 5a, 5b and gripping parts 6 for gripping the elastic members 4 on the upper and lower sides, the upper ends of the support member 3 being bent inward to form a gap between the upper and lower projecting parts 4a and the brackets 5.