The legislature of New Zealand is the Parliament. Parliament has only the House of Representatives, not the House of Lords. The functions of the House of Representatives include: representing the people of New Zealand to express the different views of people and institutions from all walks of life; reviewing and approving government taxes and expenditures; enacting laws and supervising the government's responsibility for its policies and actions.

The Ministry of Primary Industries is the main department responsible for food safety supervision in New Zealand. It is specifically responsible for formulating standards that are only applicable to New Zealand except Chapters 1 and 2 of the Australia and New Zealand Food Standards Code, including primary agricultural product standards and food processing specifications, food safety procedures, review and inspection ,and pesticide residues in food, etc.. The Ministry of Primary Industries, as the competent authority for food safety supervision in New Zealand, its food management responsibilities include: responsible for food safety in all aspects of "from farm to table".

The Ministry of Environmental Protection mainly evaluates the possible risks of pesticides and veterinary drugs to people and the environment, controls the impact of new organisms (including animals, plants, and genetically modified organisms) on the environment, and approves and controls harmful substances.

The Ministry of Health mainly improves human health and quality of life by providing people with food and nutrition guidelines, preventing and controlling diseases.The guidelines issued by the Ministry of Health include food and nutrition guidelines for infants and young children, food and nutrition guidelines for pregnant and lying-in women, and food nutrition composition tables.

The Australia New Zealand Food Standards Agency was established under the Australia New Zealand Food Standards Act (1991). It is an independent non-governmental organization responsible for formulating and maintaining food standards applicable to Australia and New Zealand. In the process of formulating standards, other government departments can participate in related content. For example, the Office of the Gene Technology Regulation of Australia participates in the management of genetically modified organic standards, involving genetically modified crops and animals used for food production. The Australian Agriculture and Veterinary Medicines Administration (APVMA) participated in the formulation of the maximum residue limits of agricultural and veterinary drugs that only apply to Australia, and they are included in the Australia New Zealand Food Standards Code. In addition, the Australia New Zealand Food Standards Agency is also responsible for food recall related work in Australia.