The proposed developments will cost around £500,000 and are being paid for by funding secured from Sportscotland, the national agency for sport.
The planned improvements include an additional 210-metre slope on the hill, 80 metres of new nursery slope, an extension and improvement work to the existing nursery slopes with new, safer ski matting, new snowtubing runs and the installation of two new travellator lift systems.
A planning application detailing the proposals has been submitted to Midlothian Council for consideration by the planning committee.
Midlothian Council, which owns and runs Midlothian Snowsports Centre, has worked closely with an expert team of designers on the plans. The developments are designed to improve facilities for beginners, as well as regulars.