To improve the durability of a machine body frame by improving the weight balance of a sprayer and preventing the application of an excessive load on a part of the frame by installing a battery and a motor above a front wheel, a chemical tank in the middle of a machine body, and an engine in the rear part.

In the push type power sprayer 1, a driving part 21 comprising a battery and a motor is installed above the front wheel 9, a chemical tank 2 is arranged in the middle part, and an engine 3 is installed in the rear part. Accordingly, the weight balance of the sprayer 1 can be improved. The chemical tank 2 is positioned on the opposite side of the battery in terms of a vertical line passing through the center of the front wheel 9 and on the opposite the of the engine 3 in terms of a vertical line passing through the center of a rear wheel 11a. The battery and the engine 3 become counter weights to prevent the application of an excessive load on part of a frame 8. In this way, the durability of the frame 8 can be improved, and the durability of the sprayer 1 can be improved.