The Institute is under the auspices of the Council of Agriculture, Executive Yuan. TACTRI, more specifically, is responsible for developing pesticide research, monitoring pesticide residues and toxic substances in agricultural products, developing plant protection technologies, providing technical services, and establishing evaluation methods and guidelines to control pesticides.

TACTRI's missions can be summarized as follows:
1.to technically support the regulatory control and registration of pesticides.
2.to improve the production process of plant protection materials, supply high-quality pesticides, and develop new formulae to increase the efficiency of agricultural production; and to carry out safety evaluation of the usage of pesticides.
3.to assist other national research institutes and local farmers by developing plant protection techniques to ensure the safe, economic, and effective use of pesticides in Taiwan.