Provided is a cutting and harvesting machine configured so that the vehicle body frame has sufficient supporting strength and a simple structure. This cutting and harvesting machine has a traveling vehicle body provided with a pair of left and right front wheels (1) and a pair of left and right rear wheels (2). The traveling vehicle body is provided with a riding and operating section, a harvesting and conveying section which cuts crops and conveys the crops rearward, and a driving engine. The vehicle body frame (F) of the traveling vehicle body is configured so as to comprise a pair of left and right frame bodies (17R, 17L) extending in the front-rear direction, the left and right frame bodies (17R, 17B) being located on both left and right sides of the traveling vehicle body and being arranged so as to extend in the front-rear direction of the traveling vehicle body.