The invention provides a packaging container. The packaging container comprises a main bottle body, a bottle cap, a bottle cap inner cylinder, an elastic body and an inner cylinder cap. The bottle capinner cylinder is provided with a plastic mass spray head, wherein the tail end of the bottle cap inner cylinder and the top of the bottle cap are provided with reverse rotation obstruction devices matched with each other, and the tail end of the inner cylinder cap and the inner wall of a bottleneck of the main bottle body are provided with rotary stopping devices matched with each other. Throughcomponents extruding, sealing, relaxing and releasing the plastic mass spray head, materials of the bottle cap inner cylinder or an inner cylinder cavity are sealed and released. The packaging container realizes that two or more materials configured separately are sealed independently and correspondingly, the storage requirement of products is ensured, meanwhile, users open the packaging container or twisted the bottle cap, contents of the packaging container can be mixed together automatically, an automatic deployment function can be achieved, and the packaging container is beneficial to carry, use, store and quality safety of products, and the cross pollution generated during deploying is avoided. The invention further provides a packaging composition and an application of the packagingcontainer.