To provide a joint structure for a doll toy, which can achieve the higher degree of freedom in the rotation of one member relative to another member, in respective members that are attached via a joint mechanism.

There is provided a joint mechanism 30 formed between a first member 10 and second member 20 of a body of a doll toy. The joint mechanism 30 is configured by a sphere 32, provided at a front end of a shaft body 31 projecting from the first member 10, being slidably inserted into a cylindrical hole 35 formed in the second member 20. The shaft body 31 includes: a first shaft body 31A which is formed on the first member 10 side and has a diameter A smaller than the inner diameter of the cylindrical hole; and a second shaft body 31B which is formed on the sphere 32 side and has a diameter B (wherein A>B). An end surface of the first shaft body 31A on the sphere 32 side is formed so as to be oblique with respect to an axis 39 of the first shaft body 31A, and an end surface thereof reaches the vicinity of the sphere 32.