An intravaginal ejaculation latency time and vaginal clonus monitoring device, comprising a monitoring sleeve (1), a comprehensive sensor group (2), and a processing circuit integration module (3); the comprehensive sensor group (2) is located within the monitoring sleeve (1), and the processing circuit integration module (3) is detachably connected to the monitoring sleeve (1); the processing circuit integration module (3) comprises a real-time clock chip, a central processing unit, a data transmission component and a power source module; the comprehensive sensor group (2), the real-time clock chip and the data transmission component are all connected to the central processing unit, and the power source module is used to provide a working power source. The monitoring device may effectively monitor, analyze, record, and display data related to sexual capabilities, is simple to use, and has low device costs.