The present invention is a multifunctional pet leash storage device for collecting and disposing animal waste. The multifunctional pet leash storage device comprises a leash housing, a waste storage compartment, a sanitary compartment, a sanitary wipe dispensing slot, a sanitary bag dispensing slot, a leash securing hole, a front lid button, a rear lid button, a handle and a battery storage compartment. The sanitary compartment includes a sanitary wipe storage area and a sanitary bag storage area. The sanitary wipe dispensing slot and the sanitary bag dispensing slot are bilaterally symmetrical to each other. The bilaterally symmetrical arrangement of the sanitary wipe dispensing slot and the sanitary bag dispensing slot provides good balance characteristics to the multifunctional pet leash storage device and an easy access of the at least one sanitary bag and the at least one sanitary wipe from the sanitary compartment.