An in-vivo information acquiring system (1; 801; 801a) comprising: a body-insertable apparatus that includes a magnetic field responding unit, and which is adapted to acquire in-vivo information and to transmit the acquired in-vivo information to the outside thereof; a magnetic field generator that generates a magnetic field for the magnetic field responding unit; a magnetic field control unit (10; 810; 810a) that controls a generation of the magnetic field using the magnetic field generator; a receiving unit that receives the in-vivo information transmitted from the body-insertable apparatus; a processing unit that processes the in-vivo information received by the receiving unit; and a display unit that displays the in-vivo information processed by the processing unit on a predetermined display screen, characterized in that the in-vivo information acquiring system (1; 801; 801a) comprises: an alarm lamp (11; 811) adapted to notify a generation state of the magnetic field using the magnetic field generator by use of light; and a control unit (10c; 810c; 810d) adapted to control a light emission process of the alarm lamp (11; 811) such that an operator who visually identifies the in-vivo information is less disturbed by the light from the alarm lamp (11; 811), wherein the control unit (10c; 810c; 810d) is adapted to generate light in the alarm lamp (11; 811) when an intensity of the magnetic field generated by the magnetic field generator becomes more than a predetermined threshold value. a body-insertable apparatus that includes a magnetic field responding unit, and which is adapted to acquire in-vivo information and to transmit the acquired in-vivo information to the outside thereof; a magnetic field generator that generates a magnetic field for the magnetic field responding unit; a magnetic field control unit (10; 810; 810a) that controls a generation of the magnetic field using the magnetic field generator; a receiving unit that receives the in-vivo information transmitted from the body-insertable apparatus; a processing unit that processes the in-vivo information received by the receiving unit; and a display unit that displays the in-vivo information processed by the processing unit on a predetermined display screen, characterized in that the in-vivo information acquiring system (1; 801; 801a) comprises: an alarm lamp (11; 811) adapted to notify a generation state of the magnetic field using the magnetic field generator by use of light; and a control unit (10c; 810c; 810d) adapted to control a light emission process of the alarm lamp (11; 811) such that an operator who visually identifies the in-vivo information is less disturbed by the light from the alarm lamp (11; 811), an alarm lamp (11; 811) adapted to notify a generation state of the magnetic field using the magnetic field generator by use of light; and a control unit (10c; 810c; 810d) adapted to control a light emission process of the alarm lamp (11; 811) such that an operator who visually identifies the in-vivo information is less disturbed by the light from the alarm lamp (11; 811), wherein the control unit (10c; 810c; 810d) is adapted to generate light in the alarm lamp (11; 811) when an intensity of the magnetic field generated by the magnetic field generator becomes more than a predetermined threshold value.