A semiconductor device structure is provided. The semiconductor device structure includes a substrate having a first source region and a first drain region. The semiconductor device structure includes a first gate over the substrate and between the first source region and the first drain region. The semiconductor device structure includes a first contact structure over the first source region. The first contact structure is electrically connected to the first source region. The semiconductor device structure includes a second contact structure over the first drain region. The second contact structure is electrically connected to the first drain region. The semiconductor device structure includes a conductive layer electrically connecting the first gate to the first contact structure and the second contact structure.