MEMS switch device and electronic apparatus

A micro electro mechanical system (MEMS) switch device, comprising:

• a base substrate, a membrane bridge structure, a first ground line, a signal line and a second ground line,
• wherein the first ground line, the signal line and the second ground line are sequentially arranged on a first side surface of the base substrate at intervals;
• wherein the membrane bridge structure has a first end electrically connected to the first ground line, and a second end, opposite to the first end, electrically connected to the second ground line;
• and
• the membrane bridge structure comprises a membrane bridge body structure and at least one protruding structure on the membrane bridge body structure, wherein the protruding structure protrudes from the membrane bridge body structure in a direction perpendicular to the first side surface of the base substrate,
• wherein one end of the protruding structure connects to one end of the membrane bridge body structure, and an orthographic projection of the protruding structure on the base substrate partially overlaps an orthographic projection of the membrane bridge body structure on the base substrate.