Automobile automatic transmission

The utility model relates to an automobile automatic transmission, which aims to solve the problems of the transmission such as large volume and high cost. In the technical scheme, the automobile automatic transmission comprises two input shafts, two intermediate shafts, a differential output shaft and a reversing shaft arranged in parallel, the two input shafts are respectively connected with a first clutch and a second clutch of a double clutch, the second input shaft is a hollow shaft and is sleeved outside the first input shaft, the first input shaft and the second input shaft are provided with a driving gear with various gear shifts, and the two intermediate shafts are provided with a driven gear corresponding to the driving gear of the gear shifts, a synchronizer and a differential driving gear engaged with a differential coil. Due to the structure with the embedded double input shafts, the two input shafts can share the position for one input shaft, and two gear shifts can share one driving gear. Therefore, the utility model not only can ensure the functions of the automatic transmission, but also can greatly reduce the volume of the whole device, significantly save space for the layout of the whole automobile, and reduce the cost of the transmission.