A sticking tool for sticking into a surface of a body, comprising: - a housing having a tip end that is opened, - a plunger to which a lancet having a sticking needle extending toward the tip end is attached, the plunger being allowed to slide inside the housing, - a stopper connected in the rear end direction of the plunger; and - a sticking-use spring for shifting the lancet, the plunger and the stopper toward the tip end of the housing, the sticking-use spring being connected to the plunger or the stopper, wherein: the lancet is housed in a cap so as to be shifted in an axial length direction, the cap covering the sticking needle and being allowed to be connected to the tip end of the housing, and when the cap is connected to the tip end of the housing, the lancet is attached to the plunger in a state being housed in the cap; - an engaging section is provided in the inner face of the housing; - a stopping section is formed in at least one of the lancet, the plunger and the stopper, characterized in that the sticking tool further comprises a connecting section that is secured to the housing and extends in the axial direction inside the housing, the adjustment mechanism which contacts the stopper and is fitted in a manner so as to cover the connecting section, a helical groove installed in at least one of the adjustment mechanism and the connecting section, and a protrusion that is formed on the other so as to shift along the helical groove and that a second position is adjusted by axially rotating the adjustment mechanism centered on a length-wise axis inside the housing by using the protrusion shifting along the groove and that the stopping section is allowed to engage the engaging section so as to stop the lancet, the plunger and the stopper at a first position; and after the lancet, the plunger and the stopper have shifted toward the tip end from the first position by the spring that is released from the engagement between the engaging section and the stopping section, the stopper comes into contact with the adjustment mechanism so that the shift of the lancet, the plunger and the stopper is stopped at the second position. - a housing having a tip end that is opened, - a plunger to which a lancet having a sticking needle extending toward the tip end is attached, the plunger being allowed to slide inside the housing, - a stopper connected in the rear end direction of the plunger; and - a sticking-use spring for shifting the lancet, the plunger and the stopper toward the tip end of the housing, the sticking-use spring being connected to the plunger or the stopper, wherein: the lancet is housed in a cap so as to be shifted in an axial length direction, the cap covering the sticking needle and being allowed to be connected to the tip end of the housing, and when the cap is connected to the tip end of the housing, the lancet is attached to the plunger in a state being housed in the cap; - an engaging section is provided in the inner face of the housing; - a stopping section is formed in at least one of the lancet, the plunger and the stopper, characterized in that the sticking tool further comprises a connecting section that is secured to the housing and extends in the axial direction inside the housing, the adjustment mechanism which contacts the stopper and is fitted in a manner so as to cover the connecting section, a helical groove installed in at least one of the adjustment mechanism and the connecting section, and a protrusion that is formed on the other so as to shift along the helical groove and that a second position is adjusted by axially rotating the adjustment mechanism centered on a length-wise axis inside the housing by using the protrusion shifting along the groove and that the stopping section is allowed to engage the engaging section so as to stop the lancet, the plunger and the stopper at a first position; and after the lancet, the plunger and the stopper have shifted toward the tip end from the first position by the spring that is released from the engagement between the engaging section and the stopping section, the stopper comes into contact with the adjustment mechanism so that the shift of the lancet, the plunger and the stopper is stopped at the second position.