The invention relates to the technical field of indoor soft decoration, and particularly provides an indoor soft decoration ecological moss wall and a preparation method of the indoor soft decorationecological moss wall. The preparation method comprises the following steps of (1) fixing a middle fiber plate; (2) fixing dead wood and light volcanic rock; (3) applying special moss fixing glue; (4)filling special moss for indoor landscaping; (5) after filling of the special moss for indoor landscaping, removing moss fragments and redundant glue in the special moss for indoor landscaping, and fixing ornaments to the dead wood; and (6) drying and curing for 24 hours under natural conditions. After processing and treatment of the moss for the soft decoration moss wall, later-period care like lighting, irrigation and manuring is not required, the original color and texture can be kept for a long time, and the ornamental effect is novel and unique. Moreover, the moss wall manufactured according to the method has the advantages of being light, anti-fading, dampproof, convenient and easy to construct, wide in application range and the like.