The invention discloses an indoor assembled stand with an angle adjusting function, and belongs to the technical field of stands. The indoor assembled stand comprises a base, an inclined plate, a mounting plate and a convex plate, wherein an arc-shaped sliding groove is formed inside the base, and the mounting plate is slidably mounted inside the arc-shaped sliding groove through a second brake trundle. According to the stand, the inclined plate, the protruding plate and the mounting plate are mounted, when the stand needs to be used, a side plate is inserted into a positioning groove formed inside the mounting plate, an inserting plate inside a side block is pushed into a clamping shell, therefore the inclined plate and the mounting plate are fixed, one end of an inserting column is inserted into the clamping shell, one end of a positioning hinge pin is driven to be clamped and embedded into the inserting column, so as to realize installation of a guardrail, the stand is designed to be assembled in a detachable mode, the problems that screwing is performed through screws, bolts and the like, disassembly is inconvenient, carrying is troublesome, and the stand does not need to be used are solved, occupied indoor space is small, and an utilization rate of indoor space is increased.