A liquid crystal phase shifter is disclosed. The liquid crystal phase shifter includes a liquid crystal cell, a partition plate, a first microstrip line, a second microstrip line and liquid crystal molecules. The liquid crystal cell includes a first substrate and a second substrate disposed opposite to each other; the partition plate is disposed between the first substrate and the second substrate; the first microstrip line is disposed on a surface of the partition plate away from the second substrate; the second microstrip line is disposed on a surface of the partition plate away from the first substrate; and the liquid crystal molecules are provided between the first substrate and the partition plate, and between the second substrate and the partition plate.