The present invention relates to a flyball instrument, having a clock face, a support component, a clock core and a steel ball rotating mechanism, wherein, the steel ball rotating mechanism is provided with a steel ball disc, an ejection frame and a ground rail; the ground rail is close to the end of the ejection frame and is provided with a first microswitch controlling the ejection frame to eject a steel ball; the steel ball rotating mechanism is provided with a timing control mechanism controlling the ejection frame to eject the steel ball at a definite time; the timing control mechanism isprovided with a second microswitch, a timing cam and a punctuality rod; the second microswitch is arranged on a clock core frame and serially connected with the first microswitch; the timing cam is fixedly connected on a minute hand shaft; one end of the punctuality rod is hinged on the clock core frame, and the other end of the punctuality rod is in contact with the timing cam; the rod body of the punctuality rod oppresses or loosens a keystoke plate of the second microswitch along with the rotation of the timing cam. As the present invention combines the ejection of the steel ball organically with punctuality time telling, the flyball instrument has high enjoyment as well as entertainment, and has high practicality at the same time. In addition, the present invention stops ejecting thesteel ball during night sleep time without affecting the rest of users.