The invention discloses a concentrated stripe type gas pumping and discharging method for a kilometer drill machine, and relates to a coal-mine gas pumping and discharging method, aiming at solving the problem that the existing gas pumping and discharging technology is long in period and bad in a pumping and discharging effect. The concentrated stripe type gas pumping and discharging method for the kilometer drill machine comprises the following steps of drilling by the kilometer drill machine, and exploring the top and the bottom of a firstly-constructed drill hole in a branching way every 70-90 meters; during drilling, keeping the distance of 3-5m within the drill hole; and after drilling, tightly sealing the opening of the drill hole, and carrying out gas pumping and discharging by high negative pressure. The method is good in the pumping and discharging effect, so that the possibility that gas is powered off in advance can be greatly reduced; the situation that the short drill hole constructing and the tunneling are influenced with each other can be solved; and the drilling construction is high in precision and safety.