With the development of animal husbandry, the growth of the pet market, the relationship between humans and animals continues to be strengthened globally. The distance between humans and animals has been shorten, which makes cross-species transmission easily. Research on zoonoses usually focuses on diseases transmitted from animals to humans, such as bovine spongiform encephalitis (BSE), acquired immunodeficiency syndrome (AIDS), and avian influenza. However, the exchange of microorganisms can be carried out in both directions. In recent years, more and more reports indicate that humans are transmitting pathogens to animals, including SARS-CoV-2, methicillin-resistant Staphylococcus aureus, influenza A virus, Cryptosporidium parvum, and Ascaris lumbricoides. Therefore, this article reviews the diseases transmitted from humans to animals and provides a basis for the effective prevention and treatment of human and animal diseases.