PURPOSE: A harmful insect collector is provided to facilitate the installation thereof and to improve insect collecting efficiency. CONSTITUTION: A harmful insect collector comprises a compacted body which is formed by compressing coier fiber. In the bottom of the compacted body, inlet ports are formed in a row. The lower part of the inlet port is opened and the right and left and top thereof are blocked. In the inner end of the inlet port, a capturing chamber(11) communicating with the end of the inlet port is formed. In the capturing chamber, an adhesive surface(12) is formed.