The invention relates to the technical field of whole sea depth exploration equipment, specifically an all-oceanic depth landing vehicle, including a vehicle frame and track pulley systems, the two track pulley systems are respectively arranged on both sides of the vehicle frame, and a driving device for driving the crawler pulley system is arranged in the vehicle frame, A primary ballast assemblyis provided in the front of the vehicle frame, A two-stage ballast assembly is arranged at the rear end of the vehicle frame, A first-stage ballast assembly includes a first-stage electromagnet and first-stage ballast iron, The first-stage electromagnet discard first-stage ballast iron when that vehicle body lands on the seafloor, The secondary ballast assembly comprises a second-stage electromagnet and second-stage ballast iron, wherein the second-stage electromagnet discards the second-stage ballast iron when the vehicle body starts to float upward, a buoyancy material is arranged on the upper side of the vehicle frame, a lifting assembly is arranged in the middle of the buoyancy material, the lifting assembly is provided with a propeller, and the propeller is started when the vehiclebody lands or floats upward on the seabed. The invention can complete scientific investigation on the seafloor, has strong adaptability to the seafloor complex operation environment, and creates a newmode of the seafloor landing equipment at the same time.