The Jin Guang Ming Jing is an influential Buddhist text in Mahayana Buddhism, and its virtue of protecting the nation and benefiting the people is valued from Central Asia to China, Japan, and Korea, and is also widely believed in East Asia. This paper uses the perspective of theoretical analysis to explore the Dharma-protecting deities and the Buddhist idea of protecting the nation in the Jin Guang Ming Jing.The author attempts to explore the main points of each chapter from the translations of the Jin Guang Ming Jing. This study also explores the Dharma-protecting deities in the Jin Guang Ming Jing; benefits of their practice of the Buddhist path and their protection of sentient beings; and even explores the merits of the Dharma-protecting deities in the Jin Guang Ming Jing in protecting the nation and its people. In the face of the current global pandemic, the author also attempts to explore from the teachings of the Jin Guang Ming Jing the way for human beings to eliminate the pandemic through self-awareness, thus realizing the Jin Guang Ming Jing concern for contemporary society.