China is one of the four ancient civilizations, and its cultural connotation is extensive and profound, covering all aspects of society, culture, science, customs and so on. Chinese culture is brilliant and long-standing, demonstrating tenacious vitality in the rolling river of history, which is the basis of the cultural identity of the Chinese nation. National cultural identity requires contemporary people not only to learn to perceive traditional culture and learn the wisdom of our ancestors, but also to adhere to the principle of seeking common ground while reserving differences, actively communicate with foreign cultures, practice the concept of a community with a shared future for mankind, find commonalities and experience differences with cultures of other countries in the world, and achieve prudent absorption and be inclusive, so as to promote the growth of cultural forest and cultural resonance across time and space. Emotional connection is a two-way emotional connection, with the subject not only limited to human beings in an alternate space and time, but also the emotional connection between human beings and nature, and human beings in the misaligned space and time. Due to China's vast territory and abundant resources, most people cannot personally experience the distinctive culture and different living environments of other regions. Therefore, travel documentary quickly become the high-quality tool and medium for most people to understand other regions of the world with it’s advantages of authenticity and high quality content. With the ingenious design of the professional film crew or the honest and straightforward sharing of the net friends with low skill level, the travel documentary can enable people in different regions to see the different natural scenery and feel the regional culture, achieving a momentary resonance of the soul, "seeing" the cultural integration at the present moment, enjoying the emotional connection jointly caused by cultural diversity and commonality, and obtaining novel experiences. This paper will discuss cultural resonance and emotional connection through image expression and characterization in Chinese travel documentaries. This paper will take "Hexi Corridor", "North Latitude 30°·China Journey", and "Another Me in the World", which are relatively representative of Chinese travel documentaries, as examples to discuss in detail the cultural resonance and emotional connection of the world shown by the audience and works, audience and lens in travel documentaries.