The twin shaft concrete mixer has strong mixing ability, the mixing quality is better and the production-efficiency is high. Equipe with multiple shaft end sealing protection device and wind pressure sealing protection device and effectively avoid leakage absolutely; Monitoring system of mixer can working condition of monitor reduction box,dischage pump and lubricating pump; Equip with special-purpose motor lubricate oil pump, and four separate pump core respectively feeds oil to four axial heads directly,without using by-pass valve; Multi pipes & way water injecting system can make sure that water can injected uniformly;