Many geologists have been interested in the Okinawa Trough due to its unique tectonic environment. The magmatism is regarded as one of the key questions in the Okinawa Trough. The advances associated with the magmatism in the trough have been overviewed, including the studies about the characters of the magmatic sources, the processes of the magma melting and evolution and the regularities of melting. Based on these, the difficult questions on this field have been presented and a new idea that using the method of Useries disequilibria to study the magmatism in Okinawa Trough has been brought forward. Meanwhile, some research directions about the study of magmatism in the Okinawa Trough should be paid much attention to in the future, e.g.① the influence of the Philippine subduction slab on the magmatism processes, ②the implications of the subducting sediment for the magma, ③the controlling factors of the magma melting, ④ the link between the magmatism and the seafloor hydrothermal activity .