Foot stand structure and keyboard using the same

A keyboard, comprising:

• a keyboard base having a first mounting slot on a lower surface of the keyboard base, and first pivot holes recessed inwardly on opposite sides of the first mounting slot;
• and
• a foot stand structure disposed on the lower surface of the keyboard base, the foot stand structure comprising a first support portion, a first sliding portion, and a compressible/stretchable member,
• wherein the first support portion comprises a first support member and a first rotating shaft protruding outward from opposite ends of the first support member,
• the first rotating shaft is sleeved in the first pivot holes so that the first support portion is accommodated in the first mounting slot and is rotatable relative to the keyboard base to an open position,
• the first support member has a first slot and a first fixing member disposed within the first slot,
• wherein the first sliding portion includes a sliding member and a first abutting member extending outward from one end of the sliding member,
• the first fixing member is disposed opposite the first abutting member, and the compressible/stretchable member is disposed between the first fixing member and the first abutting member,
• the sliding member is disposed in the first slot and is retractable relative to the first support member by the compressible/stretchable member.