The utility model discloses a dry and hard concrete test piece forming die, it includes: lower floor's moulded die, upper guide die and briquetting, lower floor's moulded die includes moulded die bottom plate, moulded die left side board, moulded die right side board and baffle, and the moulded die bottom plate is pegged graft with moulded die left side board and moulded die right side board mutually, the front and back end of moulded die left side board and moulded die right side board is connected through horizontal moulded die pull rod and nut respectively, upper strata guide die includes guide die left side board, guide die right side board and baffle, the front and back end of guide die left side board and guide die right side board is connected through horizontal guide die pull rod and nut respectively, horizontal moulded die pull rod is connected through vertical pull rod and nut with horizontal guide die pull rod. During the use, fill up lower floor's moulded die and upper guide die with dry and hard concrete, then push down through the briquetting and vibrate again in order to form closely knit dry and hard concrete test piece. The utility model discloses simple structure,convenient to use makes the closely knit effect of dry and hard concrete specimen molding.