Disclosed in the present invention are a channel transmission method and device. The method includes that: a terminal determines transmission time corresponding to a first channel as a first moment, wherein a Band Width Part (BWP) activated by the terminal presently is a first BWP; the terminal receives first control information from a network device, wherein the first control information includes first indication information, and the first indication information is to indicate that a to-be-activated BWP is a second BWP; and the terminal transmits no first channel at the first moment when the first BWP and the second BWP meet a predetermined rule.