Cloud computing is one of the fastest growing technologies which has replaced machine paradigm shift. Cloud computing provides very large scalable and virtualised resources over Internet. In Cloud computing, there are many jobs that are required to be executed by available resources while achieving best performance, minimal total time for completion, shortest response time, utilization of resource etc. To achieve these objectives we need to design, develop and propose a scheduling algorithm. In this paper we are surveying various types of scheduling techniques and issues related to them in Cloud computing. Here we have also surveyed various existing algorithms to find their appropriation according to our needs and their shortcomings.