PROBLEM TO BE SOLVED: To provide a harvesting machine that can reduce sense of pressure felt by an operator due to a ceiling part inside a cabin.SOLUTION: The harvesting machine includes: the cabin on which an operator boards an air conditioner unit 70 for performing air conditioning inside the cabin and a pre-cleaner 110 for an engine. The air conditioner unit 70 is internally installed backward of a roof part 80 of the cabin and the pre-cleaner 110 is disposed on one side of the right and left sides relative to the air conditioner unit 70.