The invention relates to a transversely placed slip sheet type internal combustion engine. The transversely placed slip sheet type internal combustion engine comprises a machine body, wherein a powerchamber, a combustion chamber and an air compression chamber are formed in the machine body, a rotor is arranged in the power chamber, and an output shaft is arranged in the middle of the rotor. The transversely placed slip sheet type internal combustion engine is reasonable in design, uses the multistage power chamber, fully uses residual pressure and residual temperature, improves heat efficiency, and simultaneously separates the combustion chamber from the power chamber, does not need lubrication oil, avoids phenomena of cylinder scuffing and the like, and improves running stability of a device.