Abstract: Ocean and continent are integral compositions of the global ecosystem. The study selects five major evaluation indexes for the resources and environment carrying capacity of sea-land coordination, including the importance of ecological protection, suitability of agricultural production, suitability of urban construction, marine environment impact, social economic condition, and development status of marine economy. The Pressure-State-Response (PSR) model is used to connect land and sea effectively, reflecting that there are mutual restriction, mutual promotion and joint development between the two as an inseparable whole.