Microwave photonics can be used for the generation, processing, receiving and distribution of microwave signals based on optoelectronic devices, with advantages such as broad bandwidth, low loss, light weight, fast reconfigurability and immunity to electromagnetic interference. With the rapid development of the theory and technology of microwave photonics, cross research between microwave photonics and multidiscipline has been the key of its direction of development. The research status of cross research between microwave photonics and some disciplines was summarized, and prospects of cross research between microwave photonics and disciplines such as laser technology, integrated optoelectronics, quantum technology and artificial intelligence were provided.