Disclosed is a radiation image capturing device including a control section which detects at least a start of irradiation based on a current value of a current detected by a current detection section, wherein the control section applies an ON-state voltage having a predetermined voltage value from a scan driving section to a switch section via each of scan lines simultaneously so as to perform reset processing of each of radiation detection elements before radiation image capturing, and thereafter, decreases the voltage value of the ON-state voltage simultaneously, monitors the current value outputted from the current detection section while keeping the decreased voltage value of the ON-state voltage, and waits for the start of the irradiation.