STRING TRIMMER

The string trimmer (100) includes a connecting rod (11), a string trimmer head (12), and an operation part (14). The string trimmer head (12) includes a trimmer line, a spool (122), a housing (123), and a streamlined protection structure. The spool is configured to wind the trimmer line and capable of rotating about a first axis (126). The housing (123) has an accommodating cavity (160) for accommodating at least part of the spool, and the housing is provided with a threading hole for the trimmer line to extend to an outer side of the housing. The protection structure (124) includes a head, a tail and a passage through which the trimmer line penetrates, where the head (12) is connected to the housing (123), the tail extends on the outer side of the housing (123), and the passage is configured to accommodate the trimmer line penetrating through the threading hole and expose the trimmer line out of the tail of the protection structure (124).