The invention provides an image error-resilience coding method, which comprises the following steps that s01, data contained in original images is divided into n data packets according to the transmission priority, the data packets in the same priority form a data subset, and r data subsets in different transmission priorities are formed; s02, the selected probability gamma i of a data window Wi and a window selecting probability distribution function are set; s03, a data window Wm is randomly selected according to the window selecting probability distribution function; s04, the data window Wm is subjected to LT code coding in a preset degree distribution function, and a coding pack is generated; and s05, the step s03 is repeatedly executed. The invention also provides an image error-resilience transmitting method adopting the image error-resilience coding method. The method has the advantages that different code rate important data and secondary data are utilized to carry out expanded window UEP (unequal error protection) coding, and the image error-resilience coding scheme is realized.