State display method and device of magnetic card information reading equipment, and equipment with state display device

The invention discloses a state display method and device of magnetic card information reading equipment, and equipment with the state display device, the magnetic card information reading equipment comprises a state indicating lamp, and the method comprises the steps that in the process of receiving a trigger signal, keeping the state indicating lamp in a first lightening state; judging whether the trigger signal is an invalid signal; and if the trigger signal is an invalid signal, controlling the state indicator lamp to be converted into a second lighting state from a first lighting state when the card swiping fails, or continuously keeping the state indicator lamp in the first lighting state when the card is not swiped. According to the method provided by the embodiment of the invention, the original state of the state indicator lamp can be kept in the process of receiving the trigger signal, so that the state indicator lamp is not displayed and reminded when interference source interference exists, the fa