Preparation method for paper-based micro-fluidic chip

The invention discloses a preparation method for a paper-based micro-fluidic chip. The trimethoxy silane is processed in a heptane solution to obtain a hydrophobic base. Meanwhile, patterns printed on the channel of a piece of filter paper are cut, and then are immersed in cetyl trimethyl ammonium bromide to obtain a hydrophilic base. The above hydrophobic base and the above hydrophilic base are bonded together to form a hydrophilic and hydrophobic access. Compared with the traditional method, the above preparation method is free of any expensive instrument/agent/metal mold, thus being novel, simple, quick, low in cost and short in production period. The entire preparation process can be completed within 7 minutes.