This review paper examines the potential of wearable and flexible electrochemical sensors for sweat analysis, highlighting their advantages for personalized health monitoring. It discusses the advantages of sweat as a biofluid for analysis, its unique biomarker content, and methods for sweat stimulation and collection. The review explores the components of wearable sweat sensors, encompassing sensing elements, electronic components, and power supply technologies. Furthermore, it showcases typical sensing platforms for different types of analytes and concludes by addressing future challenges and potential advancements in this exciting field.