The invention provides a stripe detection device and a stripe detection method capable of rapidly detecting the stripes of ellipsoidal aspheric pre-compressed prefabricated member. The device for detecting the stripes of the optical glass prefabricated member comprises a laser light source, a beam expanding system and a CCD image processing system in sequence according to a light path, wherein the CCD image processing system comprises a lens and a computer. According to the device, the strips at the inner part of the ellipsoidal aspheric pre-compressed prefabricated member are detected immediately through a stripe interference principle, and the relatively high detection precision can be achieved; the device structure is compact, the occupying space is small, the degree of automation is high, the resolution ratio effect is good, and the purpose of immediately rapidly detecting the stripes of the ellipsoidal aspheric pre-compressed prefabricated member can be achieved. According to the method, the glass does not need to be annealed and subjected to cold processing, a product can be detected immediately, the result can be obtained, site production process and parameters can be regulated timely, and the method can be implemented in an indoor limited space, the operation is convenient, and the detection efficiency is high.