A two-stroke engine comprising: a cylinder block formed with a cylinder and a crank chamber; and a piston slidably mounted in the cylinder, the cylinder block being formed with an exhaust passage leading to a combustion chamber in the cylinder through an exhaust port opened to an inner circumferential surface of the cylinder, at least one scavenging port (20A, 20B) opened to an inner circumferential surface of the cylinder, a communication passage (30A, 30B) formed from the scavenging port (20A, 20B) in a radial direction of the cylinder, and a scavenging passage (10A, 10B) formed in an axial direction of the cylinder, communicating with the crank chamber, and having an opening portion formed on a bottom surface of the communication passage, wherein a side surface forming a part of the communication passage (30A, 30B) on a far side from the exhaust port is formed towards the far side from the exhaust port in the combustion chamber, wherein the opening portion of the scavenging passage (10A, 10B) and a landing portion formed in a periphery of the opening portion of the scavenging passage (10A, 10B) are formed at a bottom portion of the communication passage (30A, 30B), wherein the landing portion is set in between the opening portion of the scavenging passage (10A, 10B) and the side surface of the communication passage (30A, 30B) on the far side from the exhaust port, and wherein the landing portion is a planar surface formed by laterally shifting the side surface of the communication passage (30A, 30B) on the far side from the exhaust port towards the far side from the exhaust port with respect to an edge portion of the opening portion on the far side from exhaust port. a cylinder block formed with a cylinder and a crank chamber; and a piston slidably mounted in the cylinder, the cylinder block being formed with an exhaust passage leading to a combustion chamber in the cylinder through an exhaust port opened to an inner circumferential surface of the cylinder, at least one scavenging port (20A, 20B) opened to an inner circumferential surface of the cylinder, a communication passage (30A, 30B) formed from the scavenging port (20A, 20B) in a radial direction of the cylinder, and a scavenging passage (10A, 10B) formed in an axial direction of the cylinder, communicating with the crank chamber, and having an opening portion formed on a bottom surface of the communication passage, an exhaust passage leading to a combustion chamber in the cylinder through an exhaust port opened to an inner circumferential surface of the cylinder, at least one scavenging port (20A, 20B) opened to an inner circumferential surface of the cylinder, a communication passage (30A, 30B) formed from the scavenging port (20A, 20B) in a radial direction of the cylinder, and a scavenging passage (10A, 10B) formed in an axial direction of the cylinder, communicating with the crank chamber, and having an opening portion formed on a bottom surface of the communication passage, wherein a side surface forming a part of the communication passage (30A, 30B) on a far side from the exhaust port is formed towards the far side from the exhaust port in the combustion chamber, wherein the opening portion of the scavenging passage (10A, 10B) and a landing portion formed in a periphery of the opening portion of the scavenging passage (10A, 10B) are formed at a bottom portion of the communication passage (30A, 30B), wherein the landing portion is set in between the opening portion of the scavenging passage (10A, 10B) and the side surface of the communication passage (30A, 30B) on the far side from the exhaust port, and wherein the landing portion is a planar surface formed by laterally shifting the side surface of the communication passage (30A, 30B) on the far side from the exhaust port towards the far side from the exhaust port with respect to an edge portion of the opening portion on the far side from exhaust port.