To provide a riding type mobile agricultural machine which is well balanced in weight in the front and rear and left and right directions of a machine body.

The machine body 5 of a riding type tending machine 1 is supported by a pair of left and right front wheels 2, 2 and rear wheels 3, 3, and an engine 12 and a fuel tank 13 are arranged at a middle position of the front wheels 2 and the rear wheels 3. The engine 12 is located at a center in the width direction of the machine body, and the fuel tank 13 is arranged on the right side of the machine body and a muffler 21 is arranged on the left side of the machine body with the engine 12 interposed in between. A driver's seat 15 on which an operator sits is positioned above a front mission case 33 between the front wheels 2, 2, and a battery 16 is arranged on the right side of the machine body, and a hydraulic continuously variable transmission 17 is arranged on the left side of the machine body with a rear mission case 46 interposed in between.