Protection structure used in electronic device with interchangeable housing

A communication device, comprising:

• an upper cover;
• a lower cover separably connecting with said upper cover for forming a first space;
• a first protection element disposed within said first space;
• a second protection element disposed between said lower cover and said first protection element and connecting with said first protection element, said first protection element and said second protection element together forming a second space;
• and
• a communication module disposed within said second space;
• wherein said first protection element and said second protection element protect said communication module when said upper cover and said lower cover are disassembled.