The invention discloses a buried sludge storage and component feeding system, including a sludge storage silo, a high press piston sludge pump system and a component sludge feeding device, which are connected. The connecting relationship of all parts of the component sludge feeding device is that an electromagnetic adjustable speed motor is successively connected with an elastic pin coupling, a reducer, a cross slider coupling and a transmission gearbox. The transmission gearbox is connected with an upper spiral organ, which is installed in a feeding box and is connected with an anterior chassis. The anterior chassis is equipped with a mud pressing plate inside, under which an extrusion spiral cavity is arranged. The extrusion spiral cavity is successively connected with an extrusion jointand a regulating valve of a discharging port. The invention saves the available space of the sludge treatment project and is convenient for the collection and the control of ozone, which is releasedby sludge. At the same time, the sludge is ensured to enter a sludge anhydration system quantitatively at an even pace, and the sludge can be in full contact with heat. Therefore, the anhydration efficiency and the granulation effect of the sludge are greatly improved.