The invention discloses a method for processing and making an environment-friendly degradable seedling culture substrate pot by utilizing crop straws, mainly comprising the following operation steps:airing crop straws, smashing and then making into processing material, mixing with a liquid adhesive in a mass ratio of 1:1 and then sufficiently agitating and mixing with an agitator, and controllingthe water content of the mixed material to be in a specialized range, so as to form a prefabricated mixed material; then pouring the prefabricated mixed material into a preset die of a hot pressing molding machine, forming a seedling culture substrate pot base body by hot pressing under the actions of certain die pressing pressure, temperature and time, and performing surface treatment to obtainthe finished product of the seedling culture substrate pot. The method disclosed by the invention is wide in material resource, and simple in making process, almost has no adverse effect after productdegradation, is light in mass, durable, and relatively low in cost, and can be used for making the seedling culture substrate pot instead of materials such as plastic, and is one of effective ways for resource utilization of the crop straws.