Building formwork convenient to shape and used for stair pouring

The utility model relates to the technical field of building manufacturing, in particular to a building template convenient to shape and used for stair pouring. The utility model aims to solve the technical problems that different templates are required to be manufactured for stairs with different specifications and concrete is easy to crack when being not watered in time. In order to solve the technical problems, the building template convenient to shape and used for stair pouring is mainly composed of a shaping template mechanism and an automatic watering mechanism, the shaping template mechanism is formed by assembling and disassembling a bottom template, a fixing rod, a first side template, a second side template and a step template, and the shaping template mechanism is connected with the bottom template, the fixing rod, the first side template, the second side template and the step template. According to the automatic watering mechanism, through cooperation of a control panel, a linear module, a transve