Pilot valve switch mechanism and a shower system applied with the pilot valve switch mechanism

A pilot valve switch mechanism, wherein comprising:

• a fixed portion comprising an inlet waterway (10), a first outlet waterway (20), a second outlet waterway (30) and a control hole (40) capable to connect to the outlet waterways (20, 30), the first outlet waterway (20) is disposed with a first outlet (21), the second outlet waterway (30) is disposed with a second outlet (31);
• a valve spool (100) slidably assembled inside the fixed portion in the direction vertical to the inlet waterway (10), the valve spool (100) is disposed with a slim hole (110) connected to the inlet waterway (10), a pressure cavity (50) is formed between the valve spool (100) and a joint (250), the control hole (40) and the slim hole (110) are connected to the pressure cavity (50);
• and
• a switch mechanism, the control hole (40) is open or closed by the switch mechanism to control the water pressure of the pressure cavity (50) to drive the valve spool (100) to move in the direction vertical to the inlet waterway (10) to alternately close the first outlet (21) and the second outlet (31), so that the inlet waterway (10) is switched to connect to the first outlet waterway (20) or the second outlet waterway (30).