Deeply engaged in the field of women's reproductive health and assisted reproduction, we have developed an intrauterine intelligent monitoring system based on miniature low-power electrochemical sensors. Our self-developed fully implantable smart sensor is compact in size, fully encapsulated with medical-grade biocompatible materials, safe, flexible, and highly compatible. It adopts a non-invasive placement method, allowing implantation and removal without surgery, making it convenient and imperceptible to use. The device integrates multi-parameter electrochemical sensors for dissolved oxygen, pH, temperature, and other variables, enabling long-term, continuous in-situ monitoring of key physiological indicators within the uterine cavity, with future potential for drug release functionality. The device incorporates multiple core technologies, including integrated chips, medical-grade encapsulation, battery-free wireless power supply, and ultra-low-power signal transmission. It connects to smart wearable terminals and an AI big data platform to perform intelligent analysis and trend prediction of intrauterine microenvironment data. This overcomes the shortcomings of traditional single sampling methods, which suffer from poor user experience, fragmented data, and susceptibility to contamination. It provides high-precision, continuous data support for clinical reproductive assessment, precise evaluation of endometrial receptivity, accurate determination of the implantation window, and personalized assisted reproductive diagnosis and treatment.