Solution 1：This can indeed occur with EndNote X1 in that environment if Instant Formatting is enabled. If you disable Instant Formatting, this process should work more quickly. To do this in Word, click on the EndNote tab and look for the "Bibliography" section. In the lower right corner of this section there should be a small arrow you can press to open the Format Bibliography screen. Click on the Instant Formatting tab and then click Turn Off. Click OK to finish this process. When this is done, new citations inserted into the document will appear unformatted. EndNote will also not automatically scan the document for unformatted citations. To Format, click the Update Citations and Bibliography button.

Solution 2：2007的拼写及语法检查与endnote不兼容造成的, 你可以word选项中的校对里将更正拼写和语法检查项四个选项都去掉,或者只留"键入时标记语法错误.