Foldable playpen

A foldable playpen comprising:

• a bottom frame assembly with a bottom frame foldable connector, four bottom frame rails, each bottom frame rail having a first end and a second end, the first end of each bottom frame rail being movably attached to the bottom frame foldable connector, the second end of each bottom frame rail being attached to a foot support;
• four top fence assemblies, each top fence assembly having a first top fence rail, a second top fence rail and a top fence joint assembly;
• four side fence assemblies, each side fence assembly having a side fence;
• and
• four vertical supports, each vertical support having an upper end and a lower end, the upper end of each vertical support being connected to the first top fence rail of a top fence assembly and the second top fence rail of an adjacent top fence assembly, the lower end of each vertical support being connected to a foot support;
• an operating device for engaging the four top fence joint assemblies with the bottom frame foldable connector;
• four operating ropes, each operating rope having a first end and a second end, for enabling the top fence rails and the bottom frame rails to respond to a movement of the bottom frame foldable connector so as to switch the foldable playpen to a folded state from an open state,
• wherein
• the first end of an operating rope is connected to a top fence joint assembly, and the second end of an operating rope is connected to the bottom frame foldable connector.