The diversified development of the sex doll market meets the needs and preferences of different users. From the most common Life Size Sex Doll series to more compact sex torsos, as well as male and transgender sex doll options, modern sex doll products have gone far beyond the scope of single functionality. Users can choose different types of dolls to experience personalized sex and emotional interaction based on their personal needs, space conditions, budget and sexual preferences. This article will take an in-depth look at several major categories of sex doll products: full-size sex dolls, transgender dolls, male dolls and sex torsos, and analyze their respective characteristics and market demand.