A support apparatus includes: a first support member; a second support member rotatably connected to the first support member and capable of rotating within a first angle range starting from a position where the first support member is located; and a third support member rotatably connected to the second support member and capable of, after the second support member rotates to a maximum angle thereof, continuing to rotate in a direction in which the second support member rotates within a second angle range starting from a position where the second support member is located. The second angle range is greater than or equal to the first angle range.