Study on the distribution of population Pharella javanica at tambol bangkeao ban Laem., Phetchaburi province. By studying in February. The 2558 - January 2005. 2559 for a period of 1 year month 1 times survey wedge shell of 5 points, each point of study area 5 square meters. The number and distribution, it was found that the maximum average dispersion is February in point E was 7.2 per square meters. And November in point D was 7.2 per square meters. The distribution and average is January in point D was 0.6 per square meters. Overall, will find a wedge shell live on each point is not much different. Dispersion is common in quite a lot.