A clasping connection structure of a contactor is disclosed, including a base, a housing and a bobbin; accommodating chambers is formed on the housing and configured to accommodate contact head therein, the accommodating chambers are separated via a side plate, the bobbin and the housing are connected via a first clasp, the first clasp is protruded and extended at a central side plate of the housing, the central side plate is located at an axial center line of the housing, correspondingly, a limiting slot for matching with the central side plate is formed on the bobbin, the bobbin is inserted in the housing, the central side plate passes through the limiting slot, the clasp of the central side plate is hooked on the bobbin at a side of the limiting slot, to connect the bobbin and the housing, the housing and the base are connected via a second clasp. The contactor of the invention is adapted to the automatic assembling, and has reduced manufacturing cost.