The invention discloses a betel nut cutting machine which comprises an automatic feeding device, a direction adjuster, a balance weight, a fruit feeding wheel, a slitting positioner and a cutting device. The automatic feeding device is located in front of the direction adjuster. The direction adjuster comprises a series of concave wheels which are linearly arranged. The concave wheels are driven by a first motor. The fruit feeding wheel is located above the direction adjuster. A groove is formed in the fruit feeding wheel. Protruding teeth are arranged on the two edges of the groove and are of a symmetric structure. The fruit feeding wheel is driven by a second motor and is fixedly connected with the second motor to form a whole and connected with the balance weight through a connecting piece. The slitting positioner is located behind the direction adjuster and is located below the fruit feeding wheel. The cutting device comprises a cutting blade which is driven by a third motor. After fruits pass through the direction adjuster, the fruits are cut through the cutting blade under the effect of the fruit feeding wheel and the slitting positioner. The betel nut cutting machine is used for cutting betel nuts so that the labor intensity of workers can be lowered, the working efficiency is improved, the product quality is ensured, and the market development demand can be met.