Fan oscillating mechanism and fan

The utility model relates to a fan oscillating mechanism and a fan. The fan oscillating mechanism comprises a rack and a base, a fixed disc is arranged on the upper end face of the machine base, a rotating disc is arranged above the fixed disc and can rotate relative to the fixed disc, a rotating shaft is arranged below the fixed disc, and the upper end of the rotating shaft penetrates through thefixed disc to be connected with the rotating disc. Wherein the machine frame is connected to the rotating disc in an erected mode, a motor is arranged on the machine frame, a crank and a head shakingconnecting rod are arranged on the machine base, a rotating shaft of the motor is arranged downwards and connected with the crank in the machine base after penetrating through the rotating disc and the fixed disc, one end of the head shaking connecting rod is connected with the crank, and the other end of the head shaking connecting rod is fixedly connected to the rotating shaft. The crank and the oscillating connecting r