Parsing the logical embedded complex sentence in Chinese consists of recognition of both logical lelation and logical level. Recognizing of logical level, which is to parse the level in this kind of sentences with lots of logical relations, is the aim in this paper. To formalize effectively the logical level in those complex sentences, in this paper, the concept of relation hierarchical tree is defined, and in view of this concept, the grammar is designed to construct the parser for this kind of complex sentences with shift-reduce algorithm improved. The parser in this paper is evaluated in open test. The accuracy, 93.56%, shows both the effectiveness of the theory in this paper.