In order to find out the situation and differences of standards for organic fertilizer at home and abroad，we investigated，analyzed and selected the standards and relevant technical regulations of China，the United States，Japan，European Union，the United Kingdom，Germany and Russia，and selected four indicators:mass fraction of organic matter，content of basic nutrients，limit of heavy metals and arsenic，and pathogen residue for standard comparison. The conclusions are as follows:(1)In terms of the limit of basic nutrients and heavy metals of organic fertilizers，Chinese Taiwan region and Hong Kong special administrative region have made a detailed classification and use of organic fertilizers.(2)In terms of heavy metal limits for organic fertilizers，European Union regulations are more stringent. The limit standards of plumbum and arsenic in China are stricter than those in most other countries.(3)In terms of pathogen residue，the Russian standard is the most stringent in all countries.(4)In terms of radioactive elements，Japan has made interim provisions on the content of radioactive element cesium in fertilizers due to the accident of Fukushima nuclear power plant.(5)The two indicators of total nutrients and organic matter mass fraction in organic fertilizer are closely related to the soil environment，varieties，traditions and historical evolution of cultivated crops in various countries and regions. It can reflect the differences of soil conditions in various regions，but does not represent the advantages and disadvantages of relevant standards.