The invention discloses a built-in air conditioning cover with an air guide pipe, which comprises an air conditioning cover, an air guide pipe and a built-in air conditioning. The air guide pipe includes an air duct transistion interface and a connection hose. The air duct transition interface comprises a cylindrical steel pipe and a sealing plate, the sealing plate is sleeved on the cylindrical steel pipe and is welded and fixed with the cylindrical steel pipe, and the sealing plate is fixed on the air conditioning cover; The connecting hose comprises an elbow pipe, a first clamp and a secondclamp are nested on the front end and the rear end of the elbow pipe respectively, the front end is sleeved on one end of a cylindrical steel pipe, the cylindrical steel pipe and the connecting hoseare fixed by the first clamp, the rear end is sleeved on the air outlet of the built-in air conditioner, and the air outlet and the connecting hose are fixed by tightening the second clamp. The invention can send the cold air generated by the air conditioner to the air ducts on both sides to help realize the uniform delivery of the cold air to each row of passengers, the installation and the disassembly are convenient, reliable, and the cold air conveying effect is very good, the appearance is beautiful and reliable, and the built-in air conditioning cover has high applicability.