Abstract: A sampling system (600) includes a sampling unit (50), a control unit (10), and a connecting tube (30). The sampling unit (50) is configured for acquiring a tissue sample. The control unit (10) is configured for controlling the working state of the sampling unit (50) and includes a first adjustment assembly (12). The first adjustment assembly (12) includes a first adjustment knob (120) and an actuating string (122), and the actuating string (122) is rigid. The connecting tube (30) is assembled with the control unit (10), with at least one end running through the control unit (10), and one end fixedly assembled with the sampling unit (50). Two ends of the actuating string (122) are respectively connected to the first adjustment knob (120) and the sampling unit (50).