Abstract: A mechanism for adjusting the height of the handle (11) of a baby carriage wherein the handle (11) has upper rod portions ending in a grip, and lower rod portions for substantially vertically and slidably supporting the respective upper rod portion. Each lower rod portion has a vertically extending throughgoing elongated opening and a pin passing through the elongated opening in the lower rod portion. The opposite ends of the pin project out of the upper rod portion. One end of the pin (26) has a knob (26) fixed thereto which is positioned in contact with the outer surface of the upper rod portion. The other end of the pin has an external thread which is adapted to engage with an internal thread positioned on the outer surface of the upper rod portion. The upper rod portion has elongated holes or at least one such which hole which is so located that pressing the upper or outer rod portion against the lower or inner rod portion is facilitated when the thraded pin is tightened.