The invention discloses an air speed and air pressure sensor for an extractor hood. The air speed and air pressure sensor comprises a sampling part. The sampling part comprises a pressure tapping pipe, a first pressure guiding pipe, a second pressure guiding pipe and a pressure sensor, wherein the first pressure guiding pipe and the second pressure guiding pipe are arranged at the ends of the pressure tapping pipe. The first pressure guiding pipe and the second pressure guiding pipe are connected to the pressure sensor through guide pipes respectively. A partition plate is arranged in the pressure tapping pipe and divides the interior of the pressure tapping pipe into a first pressure tapping cavity and a second pressure tapping cavity. The first pressure tapping cavity faces the air flow, and the second pressure tapping cavity is far away from the air flow. The first pressure guiding pipe is communicated with the interior of the first pressure tapping cavity, and the second pressure guiding pipe is communicated with the interior of the second pressure tapping cavity. The pressure tapping pipe (1) is provided with high-pressure pressure tapping holes (14) communicated with the interior of the first pressure tapping cavity (12), and the pressure tapping pipe (1) is provided with low-pressure pressure tapping holes (15) communicated with the interior of the second pressure tapping cavity (13). The air speed and air pressure sensor is characterized in that the hole centers of the high-pressure pressure tapping holes (14) are located on the side wall of the pressure tapping pipe (1), and orifices on the lower sides of the high-pressure pressure tapping holes (14) are close to the bottom of the pressure tapping pipe (1).