The utility model discloses a laser unit and a laser system. The laser unit comprises a laser device. The laser device comprises a laser chip and a collimation component, wherein the collimation component is arranged on a light path of output light of the laser chip, and is used for carrying out collimation on the output light of the laser chip to form a collimated light beam. The laser unit also comprises a reflection component arranged on the light path of the collimated light beam, wherein the reflection surface of the reflection component forms a first angle with the collimation component so as to adjust the direction of the collimated light beam to form an adjusted light beam, the range of the first angle being 0-90 DEG excluding endpoint value. Therefore, the first angle can be adjusted according to the requirement on outgoing beams of the laser unit and the laser system comprising the laser unit, furthermore, the direction of the light beam is adjusted to enable the adjusted light beam to meet the expected requirements, that is, the outgoing beams of the laser unit and the laser system comprising the laser unit can meet the expected requirements, and the qualified rates of the laser system and the laser unit are improved.