A special starting device for a cutting machine comprises a power connection seat and a starting buckle, wherein fixed holes are formed in four corners of the power connection seat, fixed screws are arranged in the fixed holes, accommodating cavities are horizontally and correspondingly formed in the power connection seat and extend leftwards and rightwards, an external threaded groove and an internal threaded groove are respectively formed in two sides of each accommodating cavity, the accommodating cavity communicates with the external threaded groove and the internal threaded groove, an external threaded rod is arranged in the external threaded groove in a threaded matching way, a tooth-shaped wheel is arranged in each accommodating cavity and is fixedly connected with an inner side end of the external threaded rod, an internal threaded rod is fixedly arranged at an inner side end of the tooth-shaped wheel, extends to the internal threaded groove and is in threaded matching with the internal threaded groove, and pin slots are horizontally and correspondingly formed in the power connection seat, extend forwards and rearwards and are arranged at lower sides of the accommodating cavities.