A telescopic power supply track, comprising: a strip-shaped power supply base, provided with two conductive strips extending in the length direction, and one end is provided with a first external terminal electrically connected to the two conductive strips; a power taking module, which slides in the length direction and is limited in the strip-shaped power supply base in the radial direction; wherein the power taking module comprises: a rod-shaped housing, provided with a hollow structure; a second external terminal, provided on an end of the rod-shaped housing away from the first external terminal; two electrical contacts, provided on the rod-shaped housing away from the second external terminal and respectively set against the two conductive strips to realize the positioning and electrical connection of the power taking module; and two strip-shaped conductive members, arranged in the hollow structure of the rod-shaped housing, and the two ends of the strip-shaped conductive member are respectively electrically connected to the second external terminal and the two electrical contacts; wherein an end of the rod-shaped housing is provided with an end cover that encapsulates the hollow structure; and wherein the electrical contact is an elastic piece structure; characterized in that the elastic piece structure comprises: a fixed connection portion, disposed in the end cover, and one end is electrically connected with the strip-shaped conductive member; and an elastic bending portion, formed by extending the other end of the fixed connection portion toward the strip-shaped power supply base. a strip-shaped power supply base, provided with two conductive strips extending in the length direction, and one end is provided with a first external terminal electrically connected to the two conductive strips; a power taking module, which slides in the length direction and is limited in the strip-shaped power supply base in the radial direction; wherein the power taking module comprises: a rod-shaped housing, provided with a hollow structure; a second external terminal, provided on an end of the rod-shaped housing away from the first external terminal; two electrical contacts, provided on the rod-shaped housing away from the second external terminal and respectively set against the two conductive strips to realize the positioning and electrical connection of the power taking module; and two strip-shaped conductive members, arranged in the hollow structure of the rod-shaped housing, and the two ends of the strip-shaped conductive member are respectively electrically connected to the second external terminal and the two electrical contacts; wherein an end of the rod-shaped housing is provided with an end cover that encapsulates the hollow structure; and wherein the electrical contact is an elastic piece structure; characterized in that the elastic piece structure comprises: a fixed connection portion, disposed in the end cover, and one end is electrically connected with the strip-shaped conductive member; and an elastic bending portion, formed by extending the other end of the fixed connection portion toward the strip-shaped power supply base. a rod-shaped housing, provided with a hollow structure; a second external terminal, provided on an end of the rod-shaped housing away from the first external terminal; two electrical contacts, provided on the rod-shaped housing away from the second external terminal and respectively set against the two conductive strips to realize the positioning and electrical connection of the power taking module; and two strip-shaped conductive members, arranged in the hollow structure of the rod-shaped housing, and the two ends of the strip-shaped conductive member are respectively electrically connected to the second external terminal and the two electrical contacts; wherein an end of the rod-shaped housing is provided with an end cover that encapsulates the hollow structure; and wherein the electrical contact is an elastic piece structure; characterized in that the elastic piece structure comprises: a fixed connection portion, disposed in the end cover, and one end is electrically connected with the strip-shaped conductive member; and an elastic bending portion, formed by extending the other end of the fixed connection portion toward the strip-shaped power supply base. a fixed connection portion, disposed in the end cover, and one end is electrically connected with the strip-shaped conductive member; and an elastic bending portion, formed by extending the other end of the fixed connection portion toward the strip-shaped power supply base.