Rotating joint and child product having rotating joint

A rotating joint, comprising:

• a base;
• a first connecting base;
• and
• a second connecting base, wherein the first connecting base and the second connecting base are rotatably connected by a first rotating shaft, a second rotating shaft is further provided between the first connecting base, the second connecting base and the base,
• wherein an axis of the first rotating shaft and an axis of the second rotating shaft are arranged in parallel, a first linkage unit is provided between the first connecting base and the base, and a second linkage unit is provided between the second connecting base and the base;
• wherein, when the base rotates, relative to the second connecting base, around the second rotating shaft in a first direction, the first linkage unit coordinates with the first connecting base to rotate, relative to the second connecting base, around the first rotating shaft in a second direction which is opposite to the first direction;
• wherein, when the base rotates, relative to the first connecting base, around the second rotating shaft in the second direction, the second linkage unit coordinates with the second connecting base to rotate, relative to the first connecting base, around the first rotating shaft in the first direction.