The invention relates to a massage core. The massage core comprises a left support rack, a right support rack, a first shaft support, a left massage mechanism and a right massage mechanism, wherein the first shaft support is rotatably arranged on the support racks, and each massage mechanism is connected to the first shaft support through a motion transformation mechanism; each massage mechanism sleeves the first shaft support and can rotate along the central line of the first shaft support; each massage mechanism comprises a first treatment part, a second treatment part and a third treatment part which are arranged at intervals, the treatment structures of the first treatment part, the second treatment part and the third treatment part are different, and the first treatment part is located at a position where the first treatment part cannot treat a user when each massage mechanism rotates to a position where the second treatment part and the third treatment part can treat the user; a rotation drive mechanism for driving the massage mechanisms to rotate is further arranged on the first shaft support. The massage core can satisfy the diversified massage requirements of the user by switching the treatment parts. The invention further provides a massage chair.