The present study explored the moderate effect of gender in the relationship between the adult attachment and work performance in the Chinese employees. The Experiences in Close Relationships Scale (ECR), The Adult Attachment Relationship Questionnaire (RQ) and the Work Performance Scale investigated 110 employees. The results showed that: 1) the preoccupied participants have lower scores at contextual performance than secured participants and scared participants; 2) the attachment-anxious people’s scores were positively with task performance and contextual performance; 3) The attachment anxiety can predict contextual performance positively; Furthermore, 4) Gender has moderate effect between two dimensions of adult attachment and job performance.