Continuously variable transmission chain and chain transmission system of continuously variable transmission

The invention relates to the field of chains, and particularly discloses a continuously variable transmission chain and a chain transmission system of a continuously variable transmission. The continuously variable transmission chain comprises a plurality of first chain links and a plurality of second chain links, each first chain link comprises at least two first chain plates arranged in parallel, and each first chain plate is provided with two first pin holes; the second chain link comprises at least two second chain plates which are arranged in parallel, and each second chain plate is provided with two second pin holes; the inner wall face of the first pin hole comprises a main bearing face, an auxiliary bearing face and an inner side wall face, and the projection of the auxiliary bearing face on the axial section is in a circular arc shape. The side face of the pin shaft comprises a main transmission face and an auxiliary transmission face. The two end faces of the pin shaft are conical faces and are dist