The relevant increase in the number of uncontrolled space debris is nowadays considered one of the main threats for future sustainability of space activities and space access. With the increase amount of space debris, space debris causes more widespread attention over the world. After analyzing the relationship between maneuvering energy, orbital transfer time and the orbital radius, a mathematical model has been established which can explain the mechanism of the space debris deorbit and improve the accuracy of orbit location. At the same time, a feedback decision-making system is proposed for choosing the best way to deorbit space debris though the analysis of the factors on the total cost.