The invention discloses a method for producing 2GPa hot-formed steel through an FTSC sheet billet production line. The method comprises the working procedures of molten iron pretreatment, converter smelting, LF refining, RH vacuum treatment, sheet billet continuous casting and continuous rolling. According to the working procedure of converter smelting, the final temperature ranges from 1660 DEG Cto 1690 DEG C, the final oxygen position ranges from 400 ppm to 800ppm, the C mass content of final molten steel is controlled to range from 0.03% to 0.06%, and the V mass content of large ladle molten steel is controlled to range from 0.15% to 0.18%. According to the working procedure of LF refining, the mass content of TFe and MnO in an outbound slag sample is smaller than or equal to 1.0%, theoutbound temperature ranges from 1630 DEG C to 1645 DEG C, and static blowing treatment is not conducted. According to the working procedure of RH vacuum treatment, the vacuum degree is smaller thanor equal to 100pa, the Si content is adjusted through calcium-containing silicon iron, the pure cycle time is longer than or equal to 8min, and calcium treatment is not conducted. The structure of a hot-formed steel matrix obtained through the method is ferrite and pearlite, the grade of a tropical core banded structure is smaller than or equal to 2.0, and the potential failure risk in the subsequent hot stamping forming and using process can be effectively reduced. The purpose that a thin-specification hot-rolled acid pickling product directly replaces a cold-rolled annealing product can be achieved, energy consumption is remarkably reduced, and the method is environmentally friendly and efficient.