The invention discloses a subframe indication method and device and a subframe determination method and device. The methods and the devices are used for preventing sub-frames unapplicable to sending of business from being used for sending the business. The subframe determination method provided by the invention comprises the steps of determining subframe information of a preset period, wherein whether information of subframes incapable of being used for sending the business exist in a preset period or not is judged, and the subframe information also comprises position information of the subframes incapable of being used for sending the business in the preset period when the information of the subframes incapable of being used for sending the business exist in the preset period; and determining the subframes incapable of being used for sending the business according to the subframe information of the preset period.