The utility model relates to a connector of a parasitical pipe and a sleeve, which comprises a connector main body, a strengthening block, and a female threaded coupling of the parasitical pipe, wherein the strengthening block is provided with a composite strengthening block and an individual strengthening block; the composite strengthening block is provided with the female threaded coupling of the parasitical pipe; a communication hole is arranged at the bottom part of the female threaded coupling of the parasitical pipe; and an inner chamber of the connector main body is communicated with the bottom of the female threaded coupling of the parasitical pipe through the communication hole. In the connector, the strengthening block can be used for centering the connector when the connector is connected with the sleeve, and gas or water is convenient to inject from the parasitical pipe to the sleeve through the communication hole; moreover, the connector has a simple structure, is practical and convenient and effectively solves the problem of connecting between the parasitical pipe and the sleeve.