Knowledge of the military is the general and obvious requirement for military photographers. The national defense and military construction have entered a new era. President Xi Jinping has led the people's army to comprehensively reshape, reconstruct and rebuild, and promote the "four modernizations". This requires military photographers to work hard to learn his thoughts of strengthening the army with distinctive characteristics of the times and Chinese characteristics created in the magnificent military practice, study modern military theory and classic cases of modern warfare, and become a real military expert. Only by deeply comprehending the strategy of strengthening and revitalizing the army, can the photographed works be ideological, artistic, on-the-spot, because a picture is worth a thousand words.