The present invention can significantly improve the brittle nature and low tensile and flexural strength with a conventional cement composite material and, moreover, manufacture of the conventional fiber-reinforced cement and which further improve the tensile and flexural performance compared with the composite material toughness Cement Composites It relates to technology and cement secondary products using them. High toughness cement composite material of the present invention, the water / binder ratio 45~80wt.%, Fine aggregate ratio for 0~30vol.%, Admixture replacement 0~50wt.% Relative to cement weight ratio of the superplasticizer to the binding agent from 0 to 1.0 wt. wt.%, unit water by cellulose-based thickeners ratio 0~1.5wt.% cement paste or the pitch-based short fibers 1.5~3.5vol.% of carbon fibers or polypropylene fibers in a volume ratio in the mixed cement mortar consisting of about It is prepared. Also, the high toughness of the cement composite material of the present invention, the bending and strain hardening behavior of the stress increases again with an increase of the tensile load of the initial crack is deformed without deterioration of stress by the crosslinking action of the fibers in the crack plane after that occurred under the action (Strain showing Hardening Behavior), and in the process the generation number of the multiple cracking (multiple crack microcracks) has high deformability, by and by using such properties utilizing toughness cement composite cement to the secondary products and concrete flexural and tensile crack width control, can exhibit anti-exfoliation and a high energy absorption capacity of harmful substances penetrating suppressed, concrete debris in the water medium.