To provide a universal one-touch telescopic device for a flexible pipe capable of easily making pipe expansion and contraction by one-touch operation and equipped with a lock function satisfactorily.

The universal one-touch telescopic device for flexible pipes includes a resilient piece B9 installed in a guide receptacle mounted in an inner pipe 4, wherein B9 is contracted resulting in separation from the inner wall of an outer pipe 7, and the length of the inner pipe 4 becomes adjustable when a guide receiving member 8 mounted at an inner rod 5 is depressed by pressing a push button 1 and the guide receptacle mounted in the inner pipe 4 is removed. The inner rod 5 is raised by separating the finger from the push button 1 to cause another resilient piece A3 in a button holding part 2 to elongate, and the resilient piece B9 is so widened by inserting the guide receiving member 8 into the guide member 6, as to result in pressure attachment to the inner wall of the outer pipe 7, and the inner pipe 4 is fixed.