A kind of blade positioning structure of hand-held hay mover,It includes: grass trimmer ontology,One blade and a sealed upper cover,One grass trimmer ontology has a mowing end,And an actuator is correspondingly provided with inside what,And the actuator has a transmission spindle and extends one passive cover of pivot joint,The passive cover end face system has a combination elongated slot,And two screw holes are equipped in what combination elongated slot,One blade has a combination section,And matched by combination section system and be combined in the combination elongated slot for setting the passive cover of what,Another what combination section corresponds to screw hole what and is equipped with two perforatings,One sealed upper cover system corresponds to passive cover and blade is equipped with perforation,And what perforation two sides correspond to the combination elongated slot of passive cover with protruding out hole slot,Sealed upper cover cooperation perforation is provided with latch fitting again,Thereby,So that constituting a kind of blade positioning structure of hand-held hay mover.一種手持式割草機之刀片定位結構，其包含：割草機本體、一刀片以及一鎖合上蓋，一割草機本體具有一割草端，並於內部對應設有一驅動件，且該驅動件具有一傳動心軸並延伸樞接一被動罩體，該被動罩體端面係具有一組合長槽，並於組合長槽內設有二螺合孔，一刀片具有一組合部，並由組合部係配合組設於被動罩體之組合長槽內，另於組合部對應螺合孔於設有二穿設孔，一鎖合上蓋係對應被動罩體以及刀片穿設有穿孔，並於穿孔兩側對應被動罩體之組合長槽具有凸伸孔槽，又鎖合上蓋配合穿孔提供有鎖件，藉此，俾能構成一種手持式割草機之刀片定位結構。
