1. Classify logistics facilities and equipment objects implemented by loading, unloading, and handling. It can be divided into warehouse loading and unloading, railway loading and unloading, port loading and unloading, automobile loading and unloading, aircraft loading and unloading, etc. Warehouse loading and unloading are carried out in conjunction with activities such as outbound, inbound, and maintenance, and mainly involve operations such as stacking, shelving, and picking up goods.

Railway loading and unloading is the process of loading and unloading train carriages, characterized by the ability to load or unload one carriage in one operation. It is rare to encounter situations such as full loading and unloading or zero loading and unloading during warehouse loading and unloading. Port loading and unloading includes loading and unloading at the front of the dock, as well as supporting loading and unloading at the rear. Some ports also use small boats to "transfer" between the dock and large ships, making the loading and unloading process more complex, It often takes several loading, unloading, and handling operations to finally achieve the goal of transitioning goods between the ship and land.

Car loading and unloading generally have a small batch size at once. Due to the flexibility of the car, it can reduce or eliminate the handling activities at all, and directly and simply use loading and unloading operations to achieve the goal of transitioning goods between the car and logistics facilities.

2. Classify according to the machinery used for loading, unloading, and handling, as well as the mode of mechanical operation. This can be divided into the "lifting up and down" method of the crane, the "forking up and down" method of the forklift, the "rolling up and rolling down" method of the semi-trailer or forklift, the "moving up and moving down" method, and the bulk method.

(1) The "hanging up and hanging down" method. Using various lifting machinery to lift the goods from the top, relying on the vertical movement of the lifting device to achieve loading and unloading, and carrying within the range of crane operation or rotation, or relying on small handling vehicles to achieve small handling. Due to the vertical movement of lifting and lowering, this loading and unloading method belongs to vertical loading and unloading.

(2) Fork up and fork down method. Using a forklift to lift the goods from the bottom and rely on the movement of the forklift to move the goods, the handling is entirely dependent on the forklift itself, and the goods can be placed directly at the destination without landing midway. This method of vertical movement is not significant but mainly horizontal, belonging to the horizontal loading and unloading method.

(3) Roll up and roll down method. Mainly refers to a horizontal loading and unloading method in ports. The use of forklifts, semi-trailers, and cars to carry goods, along with the vehicle, to board the ship and then disembark from the ship after reaching the destination, is called the "roll up roll down" method. By using the rolling up and rolling down method of a forklift, after unloading on the ship, the forklift must leave the ship. If a semi-trailer, flatbed truck, or car is used, the forklift will tow the semi-trailer or flatbed truck onto the ship, then the forklift will leave the ship, and the cargo carrying vehicle will be transported to the destination together with the goods. The original vehicle will be driven off or the forklift will be towed onto the ship to pull the semi-trailer or flatbed truck. The roll up and roll down method requires specialized vessels, which also have different requirements for the dock. This specialized vessel is called a "roll on/roll off vessel".

(4) Move up and down method. It is a method of moving goods from one vehicle to another by moving them horizontally, using various methods to avoid vertical movement between two vehicles (such as trains and cars). The method of moving up and down requires two vehicles to be horizontally aligned, therefore, changes need to be made to the platform or vehicle cargo platform, and mobile tools should be used to achieve this loading and unloading.

(5) Bulk unloading method. Loading and unloading of bulk materials. Generally, from the loading point to the unloading point, there is no landing in the middle, which is a combined loading and unloading method.

3. Classify according to the main movement form of the bedding. This can be divided into two forms: vertical loading and unloading and horizontal loading and unloading.

4. Classify according to the objects of loading, unloading, and transportation. This can be divided into bulk cargo loading and unloading, single piece cargo loading and unloading, container cargo loading and unloading, etc.

5. Classify according to the characteristics of loading and unloading operations. Based on this, it can be divided into two categories: continuous loading and unloading and intermittent loading and unloading. Continuous loading and unloading mainly refers to the continuous operation of large quantities of bulk or small items of the same kind through continuous conveying machinery, with no pause in the middle and no gap between goods. This method is suitable for situations where the loading and unloading volume is large, the loading and unloading objects are fixed, and the goods are not easily packaged. Intermittent loading and unloading has strong maneuverability, and the loading and unloading location can change over a large range. It is mainly suitable for various goods with unstable cargo flow, especially for packaged goods, large cargo, and loose cargo. This method can also be used for bulk cargo.