Bionic pain-free syringe needle

The invention discloses a bionic pain-free syringe needle, and belongs to the technical field of medical instruments. A needle tip, a syringe and a connector are structurally integrated, the cross section of the syringe is circular, a curve A is formed on the upper surface by a connecting line between a and b, the syringe under an overlooking angle takes a longitudinal axis c-c as a center, a sliding rail I and a sliding rail II are symmetrically arranged on two sides of the syringe under the overlooking angle, a starting point in the sliding rail I is e, a terminal point in the sliding rail Iis f, a curve B formed by a connecting line between the e and the f, a starting point in the sliding rail II is c, a terminal point in the sliding rail II is d, and a curve B' is formed by a connecting line between the c and the d. A mathematical expression of the curve A is y1=3.115*10x -0.04847x +27.36x-4688, wherein 350