In this paper, analysis results of the photometric data of DO Dra will be presented. DO Dra had been observed with 1 m LOAO telescope and 0.6 m CBNUO telescope from 2005 through 2014. The data shows kind of periodic oscillation behavior in the orbital period and also in the spin period. It has been found that these QPOs are not observed always and that the periods vary from 30 min to 80 min. We also found that the period variation seems to repeat itself with the period of 13.5 days. It is essential to monitor this object in the future as well as to carry out model calculation in order to have better understanding of these QPO phenomena.

• Kiyoung Han(Chungbuk National University Observatory, Jinchoen 27867, Korea)
• Yonggi Kim(Chungbuk National University Observatory, Jinchoen 27867, Korea, Department of Astronomy and Space Science, Chungbuk National University, Cheongju 28644, Korea)
• Ivan L. Andronov(Department of High and Applied Mathematics, Odessa National Maritime University, Odessa 65029, Ukraine)
• Joh-Na Yoon(Chungbuk National University Observatory, Jinchoen 27867, Korea, Department of Astronomy and Space Science, Chungbuk National University, Cheongju 28644, Korea)
• Lidia L. Chinarova(Astronomical Observatory, Odessa National University, Odessa 65014, Ukraine)