The aim of this study is to analyse the efficiency of beef cattle marketing which is delivered from Sumbawa Province to Lombok Island, and to describe the marketing system. Number of sample was 46 respondence consisting of 30 farmers, 10 middleman in livestock, 1 collecting trader, and 5 slaughterers in Lombok Island. Observed variable consisted are marketing margin, farmer’s share, and marketing efficiency. Data was analysed statistically. Result showed that there were 2 channels of marketing, firstly, farmer-middleman in livestock-collecting trader-slaughterer in Lombok Islandconsumer; second channel was farmer-collecting trader-slaughterer in Lombok Island-consumer. The highest marketing margin found in the first channel was as much as Rp 1.517.500/cattle, and the lowest margin found in the second channel was as low as Rp 1.185.000/cattle. The highest farmer’s share occurred in the first channel was as much as 96.08% and the lowest was in the second channel as low as 95.09%. the second channel was the most efficient based on the efficiency index count, which was 5.78%, however the first channel was 7.62%.