A package having a time reminding function. The package comprises a cap, a connecting line, an absorbing rod, a second connecting part, a sealing thin film, and a body. The absorbing rod is disposed inside the body of the package by means of the second connecting part and is used for absorbing a substance stored in the package so as to deform. The sealing thin film covers over the absorbing rod and is connected to the cap by means of the connecting line. When the cap is opened, the connecting line pulls the sealing thin film, such that the absorbing rod contacts the substance stored in the package. The package can achieve a timing function without using a timer, and features a simple structure and low costs.