The invention discloses a system for detecting computer accessing situation in the network and a method thereof, comprising the steps of: setting a detection system of the computer accessing situation, and previously memorizing a corresponding relationship between a fault reason and a scheme in the system; and the method further comprises the steps of: after receiving a fault detection request, respectively detecting a current network environment, a document system and a remote server of the computer by the detecting system; if the fault is not found out, directly feeding back to a user that no fault is available; and if the fault is found out, classifying and analyzing error information of a detect result, ensuring the fault reason corresponding to the error information, and ensuing the scheme according to the corresponding relationship of the fault reason and the scheme, so as to feed back the fault reason and the scheme to the user. The invention realizes the detection of the network environment, the detection of the document system, and the detection of the remote server.