The average body length of Sergia shrimp was 37.01±3.11mm in 2017, that was larger than the minimum maturity size at 32.8mm, belonged to reasonable sizes to catch. In April, the number of vessels operating was the highest in 55 boats, but then rapidly decreased to July With only 3 boats remaining. The highest average CPUE was 153.03 kg per day per boat in July and the lowest was 56.18 kg per day per boat in May, with an average of 92.87 kg per day per boat. Compared with last year, The daily catch of 316.72kg is much lower than that of the previous year. In addition, the total catch of Sakura shrimp in Ilan Bay in the current year is 256.99 tonnes. Compared with the average annual catch of about 680 tonnes in the past three years, the catches are also declined.