Alternaria toxins， as the secondary metabolites produced by Alternaria species， are widely contaminated in crops and agricultural products such as cereals， fruits， vegetables， nuts， oil crops， etc.， which shows different degrees of acute toxicity， genetic toxicity， reproductive and developmental toxicity to humans and animals. However， the available studies of its contamination level， dietary exposure and toxic effects are still relatively limited and short of systematization， which making it difficult to carry out a comprehensive risk assessment. Therefore， this review systematically demonstrated the contamination status and toxicological profiles of typical alternaria toxins， aiming to provide a more comprehensive and systematic theoretical basis for the further assessment of exposure level of alternaria toxins， comprehensive safety evaluation， and scientific formulation of limit standards and regulations.