When surveying the closed traverse , sometimes there appears a kind of untrue closing phenomenon . This paper dwells on the form, analysis of causes, the eliminating methods and so on.

• 闭合导线测量时,有时会出现一种假闭合现象。针对这种假闭合现象,从表现形式、成因分析、消除方法等方面做了详细的论述。