<p>An acceleration sensor element constitutes a piezoresistance type acceleration sensor in which an acceleration sensor chip (15) including a cantilever structure of mass (11) and beam parts (12) and a piezoresistor (13) formed on the beam part is mounted on a main lead (16) which is slanted for positioning the piezoresistor and the center of gravity (11a) of the mass (11) substantially on the same horizontal plane in mounted state of the sensor. <IMAGE></p>
