Provided are a transmitting method and a transmitting device for uplink control information, a storage medium, and a user equipment. The transmitting method includes: receiving PUCCH resource assignment information sent from a network to determine a PUCCH format and assigned resource blocks; and resource mapping the uplink control information at least based on all frequency domain resources of the assigned resource blocks, if the determined PUCCH format is one that requires more than one physical resource block for resource transmission and a number of the assigned resource blocks is larger than that required for transmitting the uplink control information. With the technical solution provided in the present disclosure, when the uplink control information is transmitted in unlicensed spectrums in a PUCCH format requiring more than one physical resource block for resource transmission, the occupation ratio of the uplink power in unlicensed spectrums can be significantly improved.