Abstract: To explore the space development and utilization degree of reclamation in Jinzhou bay, we chose a total of 5 base of TM, ETM + data from 1995~2015 as basic data, and analyzed the spatial utilization structure, utilization level, dynamic attitude and center of mass transfer of the enclosed sea.The results show that(1) Jinzhou bay waters space development and utilization of the activity type, but the scale structure is not balanced, the total reclamation area from 2756.93 hectares in 1995 to 7234.70 hectares in 2015, in the central sea port with the sea area of the largest increase, the southern waters of undeveloped sea time.(2) In terms of spatial utilization, the proportion of artificial coastline in the central sea area is the highest, and the northern waters have not changed much, and the southern seas have increased rapidly since 2010.From sea type diversity index, the central sea 2005 years ago in Marine diversity index is higher, more reasonable types with the sea, and later in 2010, with the sea type diversity index decreased, northern waters less volatile, southern waters slowly rising trend.(3) With the attitude of reclamation, the northern sea ports have the highest sea movement attitude, reaching 5%;In the middle of the sea, the change in the sea moving attitude was the largest in the surrounding area, which was 7.54%.In the southern sea, the undeveloped attitude was 5.94%.(4) The spatial center of the reclamation of the sea was transferred, and the reclamation of the sea center in 1995~2015 kept moving to the southeast, indicating that the reclamation of the waters of Jinzhou Bay was gradually moving to the southeast.