Detecting the quality of cement bonding and the corrosion damage condition of the casing is an important measure to maintain the integrity of the wellbore. However, wellbore integrity logging faces challenges such as poor circumferential resolution, low measurement accuracy, and poor evaluation effect of light weight cement. To solve these problems, an ultrasonic vertical incidence and oblique incidence combined measurement design scheme was proposed, and an ultrasonic Lamb-wave scanning imaging logging tool was developed. The tool is composed of a rotary-scanning acoustic assembly, a roller elastic centralizer, a drive mechanism and measuring sensor assembly, and an electronic bin sub. The tool adopts a fast logging operation mode, mainly relying on downhole storage with cable transmission as a subsidiary, and clearly demonstrates the cement bond quality and casing corrosion damage degree with high-resolution images. Field applications indicate that the full 360° scanning measurement of the tool completely covers the entire circumference of the wellbore, and the azimuth imaging map can directly present the circumfluence position of cement loss, channels, and casing corrosion. It holds significant advantages in the evaluation of light cement cementing quality, providing technical support for the safe and stable production of oil and gas wells.