A yarn cutting-sucking device configured to cut and suck yarns which run in a yarn running direction while being aligned in an arrangement direction, the yarn cutting-sucking device comprising: a cutter which includes a blade part (42a, 142a) for cutting each of the yarns; a sucking section which is movable together with the cutter and which is configured to suck the yarns cut by the cutter; a first guide (44, 144) which is provided upstream of the cutter in the yarn running direction, which moves together with the cutter, and which is configured to guide each of the yarns to the blade part (42a, 142a); characterized in that the yarn cutting-sucking device further comprises: a second guide (45, 145) which is provided downstream of the cutter in the yarn running direction, which moves together with the cutter, and which is configured to guide each of the yarns to the blade part (42a, 142a), when the cutter cuts the yarns, a relative position of the cutter to the yarns moving from one side toward the other side in the arrangement direction, the first guide (44, 144) including a first regulatory portion which regulates movement of each of the yarns in a direction in which each of the yarns is pushed as a result of contact with the blade part (42a, 142a), and the second guide (45, 145) including a second regulatory portion which regulates the movement of each of the yarns in the direction in which each of the yarns is pushed as a result of the contact with the blade part (42a, 142a). a cutter which includes a blade part (42a, 142a) for cutting each of the yarns; a sucking section which is movable together with the cutter and which is configured to suck the yarns cut by the cutter; a first guide (44, 144) which is provided upstream of the cutter in the yarn running direction, which moves together with the cutter, and which is configured to guide each of the yarns to the blade part (42a, 142a); characterized in that the yarn cutting-sucking device further comprises: a second guide (45, 145) which is provided downstream of the cutter in the yarn running direction, which moves together with the cutter, and which is configured to guide each of the yarns to the blade part (42a, 142a), when the cutter cuts the yarns, a relative position of the cutter to the yarns moving from one side toward the other side in the arrangement direction, the first guide (44, 144) including a first regulatory portion which regulates movement of each of the yarns in a direction in which each of the yarns is pushed as a result of contact with the blade part (42a, 142a), and the second guide (45, 145) including a second regulatory portion which regulates the movement of each of the yarns in the direction in which each of the yarns is pushed as a result of the contact with the blade part (42a, 142a). a second guide (45, 145) which is provided downstream of the cutter in the yarn running direction, which moves together with the cutter, and which is configured to guide each of the yarns to the blade part (42a, 142a), when the cutter cuts the yarns, a relative position of the cutter to the yarns moving from one side toward the other side in the arrangement direction, the first guide (44, 144) including a first regulatory portion which regulates movement of each of the yarns in a direction in which each of the yarns is pushed as a result of contact with the blade part (42a, 142a), and the second guide (45, 145) including a second regulatory portion which regulates the movement of each of the yarns in the direction in which each of the yarns is pushed as a result of the contact with the blade part (42a, 142a).