A portable cutlery, comprising a first casing and a second casing , an accommodation room being defined between the first casing and the second casing after the first casing and the second casing are connected face-to-face, a cutlery being accommodated in the accommodation room , whereby one side of the first casing , facing the second casing , has a first engaging groove , and the second casing is provided with a buckle that is movable between a locking position and an unlocking position, one side of the buckle , facing the first casing, has a second engaging groove , and the cutlery has a functional end portion for taking food, a connecting end portion and a pivot portion between the functional end portion and the connecting end portion , characterized in that said one side of the first casing , facing the second casing , has a first engaging block , one side of the second casing , facing the first casing , has a pivot , said one side of the buckle , facing the first casing , has a second engaging block , when the first casing and the second casing are connected face-to-face and the buckle is moved to the unlocking position, the first engaging block is disengaged from the second engaging groove , the second engaging block is disengaged from the first engaging groove , and the first engaging block leaves the second engaging block , thereby unlocking the first casing and the second casing ; when the buckle is moved to the locking position, the first engaging block is engaged in the second engaging groove , the second engaging block is engaged in the first engaging groove , and the first engaging block and the second engaging block block each other, thereby locking the first casing and the second casing ; said pivot portion of the cutlery is pivotally connected to the pivot , so that the functional end portion or the connecting end portion is selected to be moved out of the accommodation room by pivoting the cutlery . the second casing is provided with a buckle that is movable between a locking position and an unlocking position, one side of the buckle , facing the first casing, has a second engaging groove , and the cutlery has a functional end portion for taking food, a connecting end portion and a pivot portion between the functional end portion and the connecting end portion , characterized in that said one side of the first casing , facing the second casing , has a first engaging block , one side of the second casing , facing the first casing , has a pivot , said one side of the buckle , facing the first casing , has a second engaging block , when the first casing and the second casing are connected face-to-face and the buckle is moved to the unlocking position, the first engaging block is disengaged from the second engaging groove , the second engaging block is disengaged from the first engaging groove , and the first engaging block leaves the second engaging block , thereby unlocking the first casing and the second casing ; when the buckle is moved to the locking position, the first engaging block is engaged in the second engaging groove , the second engaging block is engaged in the first engaging groove , and the first engaging block and the second engaging block block each other, thereby locking the first casing and the second casing ; said pivot portion of the cutlery is pivotally connected to the pivot , so that the functional end portion or the connecting end portion is selected to be moved out of the accommodation room by pivoting the cutlery . <EOS>