Based on the purse seine statistical data of skipjack tuna in western and central Pacific Ocean during 1995-2014, 22 high catch fishing zone were selected, taking catch data as the index and combining different climatic conditions divided by the Nino index, to establish the forecasting model of Katsuwonus pelamisin western and central Pacific Ocean based on the different climatic conditions.The results showed that:the catch of skipjack fluctuated among different climatic conditions, the monthly total catch and monthly mean catch in El Nino were the highest, which was similar to La Nina, and higher than the normal condition; the catch among different spatial and climatic conditions had difference, the catch in 5°N was higher than 5°S, and the normal condition had the highest catch; La Nina event was the highest between the 145°E-165°E; La Nina was the lowest eastward of 165°E; the relationship between catch and SSTA of Nino 3.4 was established, and the above two indexes had strong relationship, fit well with the Normal Model (P<0.01). The model validation result showed that predicted results and actual results fitted well and had significant relationship in all the three climatic conditions. The spatial catch variation of skipjack tuna was analyzed under three different climatic conditions in western and central Pacific Ocean. The model can effectively provide new idea for the future work of fishing ground prediction and forecasting.