The invention discloses a signpost convenient to replace, which comprises a base. A stand column is connected to the upper end of the base; a top plate is connected to the top end of the stand column;a transparent cover is arranged on the upper end of the top plate; a cavity is formed between the transparent cover and the top plate; a solar panel and a storage battery are arranged in the cavity;the solar panel is electrically connected with the storage battery; an illuminating lamp is arranged on the bottom part of the top plate and is electrically connected with the storage battery; a plurality of pairs of long striped sliding rail pieces are uniformly distributed along a circumference of the periphery of the stand column; a sliding chute A is formed between each pair of sliding rail pieces; a screw rod is arranged in each sliding chute A along a length direction of the sliding chute A; the top end of each screw rod is rotatably connected with the bottom part of the top plate; a sliding block is in threaded connection onto each screw rod; the shape and the size of each sliding block are matched with those of each sliding chutes A; indicators are connected to one sides, far awayfrom the stand column, of the sliding blocks; indicating arrows are arranged on the indicators; sleeve pipes are connected to the bottom ends of the screw rods through locking devices; rocking handlesare fixedly connected to the bottom ends of the sleeve pipes. According to the signpost convenient to replace provided by the invention, the indicators can be disassembled and replaced conveniently so as to guide a direction for tourists at night.