Abstract: Ovarian cancer is one of the common malignant tumors of female reproductive system. It is difficult to diagnose early, prone to relapse after initial treatment, and has a poor prognosis, so diagnosis and treatment still face great challenges. Imaging examination is an indispensable part in the diagnosis and treatment of ovarian cancer. Among them, nuclear medicine molecular imaging technology has become a highly potential non-invasive imaging method in the diagnosis and treatment of ovarian cancer. PET/CT has been widely used in the diagnosis, staging, treatment efficacy, prognosis, and recurrence evaluation of ovarian cancer. PET/MRI has shown significant advantages in the diagnosis and treatment of ovarian cancer due to its high soft tissue resolution and low radiation dose. SPECT/CT also plays an important role in the diagnosis and treatment of ovarian cancer due to the development of various new radioactive tracers. The authors review the application and research progress of PET/CT, PET/MRI and SPECT/CT about ovarian cancer, in order to further improve the value of molecular imaging technology in the diagnosis and treatment of ovarian cancer.