A flexible display screen electronic apparatus and a control system thereof are provided. The flexible display screen electronic apparatus includes: an apparatus body, and a flexible display screen and a second roller which are disposed on the apparatus body. The flexible display screen includes a first end and a second end opposite to the first end, the first end is disposed on the apparatus body, the second end is fixed on a second roller, and the flexible display screen is configured to be windable around the second roller; and display surface area between the second end and the first end is variable. The flexible display screen electronic apparatus can change the size of the display screen flexibly as required to meet different demands of users.