A liquid crystal shutter (100) and a camera (200) with therein. The liquid crystal shutter (100) includes a power supply (10), a switch (20) and a liquid crystal box (40), all parts are electrically connected and form a control circuit. The liquid crystal box (40) includes a first electric plate (42), a first polarizing filter (424), a second electric plate (44), and a second polarizing filter (444). A predetermined amount of liquid crystal (46) is contained between the first electric plate (42) and the second electric plate (44). The first polarizing filter (424) is formed on a surface of the first electric plate (42). A second polarizing filter (444) is formed on a surface of the second electric plate (44). The axial direction of the second polarizing filter (444) is perpendicular to that of the first polarizing filter (424).