Connecting structure of umbrella sleeve type telescopic pipe fitting

The utility model relates to a connecting structure of a sleeved telescopic pipe fitting of an umbrella. The connecting structure comprises an outer pipe (1), an inner pipe (2), an elastic piece (3), an outer pipe end plug (5) and an inner pipe end plug (6), wherein the outer pipe (1) and the inner pipe (2) are sleeved in a sliding manner; the side wall of one end of the outer pipe (1) is provided with a positioning hole (4) for the elastic piece (3) to extend out, the elastic piece (3) is installed in the inner pipe end plug (6) and extends out of the side wall of the inner pipe end plug (6), the inner pipe end plug (6) is fixed to one end of the inner pipe (2) and sleeved with an inner cavity of the outer pipe (1), and the outer pipe end plug (5) is fixed to the end, provided with the positioning hole (4), of the outer pipe (1) and at least partially located in the inner cavity of the outer pipe (1). A V-shaped protrusion and a V-shaped concave position which are matched with each other are arranged on the