A mobile terminal support frame (100) comprises a support base (10), a first holding arm (20), a second holding arm (30), a support arm (40), and a driving assembly (50). The first holding arm (20) and the second holding arm (30) are oppositely disposed at two sides of the support base (10). The first holding arm (20), the second holding arm (30), and one end of the support arm (40) are disposed inside the support base (10). The support base (10) is internally provided with a transmission gear (14). A first transmission rack (23) is provided on the first holding arm (20). A second transmission rack (33) is provided on the second holding arm (30). The first transmission rack (23) and the second transmission rack (33) engage with the transmission gear (14). The driving assembly (50) comprises a first connecting arm (53), a second connecting arm (54), and a first elastic reset member (55). The first connecting arm (53) and the second connecting arm (54) are rotatably connected inside the support base (10). The first elastic reset member (55) is connected between the first connecting arm (53) and the second connecting arm (54). One end of the first connecting arm (53), one end of the second connecting arm (54), and the first elastic reset member (55) are configured to be coaxial. One end of the first connecting arm (53) is movably connected to the first holding arm (20). One end of the second connecting arm (54) is movably connected to the support arm (40). The mobile terminal support frame (100) is easy to operate.
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