The invention discloses a pyrogenic recycling method of iron salt containing nitrogen and sulfur and belongs to the technical field of secondary resource recycling. Iron salt containing nitrogen and sulfur is subjected to drying and denitrification, flue gas containing nitric oxide and iron salt containing sulfur are produced, and nitrogen elements are separated from iron and sulfur elements; the flue gas containing nitric oxide is used for preparing nitric acid after being recovered, iron salt containing sulfur is calcined at the high temperature, flue gas containing sulfur oxide and iron oxide are produced, and sulfur elements are separated from iron elements; the flue containing sulfur oxide is used for producing sulfuric acid after being recovered, iron oxide is sold as iron ore concentrate, and harmless and clean treatment of iron salt containing nitrogen and sulfur is realized. The technological process is short, the technical condition is easy to control, the operation is simple, and resource recycling of iron, sulfur and nitrogen in the iron salt containing nitrogen and sulfur is realized.