An aspiration tip, comprising: a syringe section including an inner tubular passage defining an aspiration path for aspirating an object; and a plunger movable in the tubular passage while coming in contact with an inner wall surface of the tubular passage, wherein the syringe section includes an aspiration opening formed in a distal end of the tubular passage for aspirating the object; the plunger includes a plunger leading end portion configured to protrude from the aspiration opening before the aspiration of the object and at the time of discharge of the object, and retract in the syringe section at the time of the aspiration of the object; the syringe section includes a syringe base end portion and a syringe main body portion; the syringe main body portion has a linear shape with one end connecting with the syringe base end portion and the other end opposite to the one end, the syringe main body portion having an outer periphery diametrically decreasing from the one end to the other end; the plunger includes a plunger base end portion and a plunger main body portion; the plunger base end portion is placed in the syringe base end portion; the plunger main body portion has one end connecting with the plunger base end portion and the other end opposite to the one end; the tubular passage is disposed in the syringe main body portion and is in the form of a cylinder having a constant inner diameter; and the plunger main body portion includes a first main body part in the form of a cylinder having a constant outer diameter, the first main body part being movable in the tubular passage of the plunger main body portion with a circumferential surface of the cylinder coming in contact with an inner wall surface of the syringe main body portion; the syringe section further includes a syringe leading end portion having a first conical part and a second conical part joining the first conical part; characterized in that the first conical part has one end connecting with the syringe main body portion and the other end opposite to the one end, an outer diameter of the first conical part narrowing from the one end to the other at a first reduction rate; and the second conical part has one end connecting with the other end of the first conical part and the other end bearing the aspiration opening, an outer diameter of the second conical part narrowing from the one end to the other end at a second reduction rate greater than the first reduction rate. a syringe section including an inner tubular passage defining an aspiration path for aspirating an object; and a plunger movable in the tubular passage while coming in contact with an inner wall surface of the tubular passage, wherein the syringe section includes an aspiration opening formed in a distal end of the tubular passage for aspirating the object; the plunger includes a plunger leading end portion configured to protrude from the aspiration opening before the aspiration of the object and at the time of discharge of the object, and retract in the syringe section at the time of the aspiration of the object; the syringe section includes a syringe base end portion and a syringe main body portion; the syringe main body portion has a linear shape with one end connecting with the syringe base end portion and the other end opposite to the one end, the syringe main body portion having an outer periphery diametrically decreasing from the one end to the other end; the plunger includes a plunger base end portion and a plunger main body portion; the plunger base end portion is placed in the syringe base end portion; the plunger main body portion has one end connecting with the plunger base end portion and the other end opposite to the one end; the tubular passage is disposed in the syringe main body portion and is in the form of a cylinder having a constant inner diameter; and the plunger main body portion includes a first main body part in the form of a cylinder having a constant outer diameter, the first main body part being movable in the tubular passage of the plunger main body portion with a circumferential surface of the cylinder coming in contact with an inner wall surface of the syringe main body portion; the syringe section further includes a syringe leading end portion having a first conical part and a second conical part joining the first conical part; characterized in that the first conical part has one end connecting with the syringe main body portion and the other end opposite to the one end, an outer diameter of the first conical part narrowing from the one end to the other at a first reduction rate; and the second conical part has one end connecting with the other end of the first conical part and the other end bearing the aspiration opening, an outer diameter of the second conical part narrowing from the one end to the other end at a second reduction rate greater than the first reduction rate.