The invention relates to a universal stubble-cleaning no-tillage fertilizing and seeding machine for rice and wheat. The machine comprises a machine frame, land wheels, a contrarotating stubble cleaning device, a fertilizing and seeding integrated device, a fertilizer feeder, a seed feeder, a jam preventing device, a pressing device and a soil scraper, wherein along the advancing direction of the machine from front to back sequentially, the land wheels are mounted on the machine frame, straight knives and curved knives are distributed on a knife shaft of the contrarotating stubble cleaning device at intervals, a fertilizer placer and a seeder are connected with the fertilizer feeder and the seed feeder respectively through a fertilizer pipe and a seed pipe, and the shape of a seed falling opening at the lower end of the seeder is a dovetail groove type with certain width; and during work, a seedbed zone with predetermined depth is ploughed in ground, a jam preventing knife shaft is mounted in a gap between the fertilizer feeder and the seed feeder so as to achieve a secondary jam preventing function, soil is thrown up to cover seeds by the contrarotating stubble cleaning device, the pressing device is used for finishing pressing, and the soil scraper leveling superfluous soil on a seeding belt. The machine is dual-purpose, the cost is reduced, the fertilizing and seeding effects are good, the labor intensity is reduced, and the efficiency is relatively high.