diff --git a/src/QuartzHostedService/IJobRegistratorExtensions.cs b/src/QuartzHostedService/IJobRegistratorExtensions.cs
index 6698539..27e4cdf 100644
--- a/src/QuartzHostedService/IJobRegistratorExtensions.cs
+++ b/src/QuartzHostedService/IJobRegistratorExtensions.cs
@@ -35,6 +35,33 @@ namespace QuartzHostedService
 
             return jobRegistrator.RegiserJob<TJob>(triggers());
         }
+        public static IServiceCollection AddQuartzJobDetail(this IServiceCollection services, Func<IJobDetail> detail)
+        {
+            services.AddSingleton<IScheduleJob>(provider => new ScheduleJob(detail(), new List<ITrigger>()));
+            return services;
+        }
+        public static IServiceCollection AddQuartzJob<TJob>(this IServiceCollection services, string identity) where TJob : class
+        {
+            return services.AddQuartzJob<TJob>(identity, null);
+        }
+
+        public static IServiceCollection AddQuartzJob<TJob>(this IServiceCollection services, string identity, string description) where TJob : class
+        {
+            if (!services.Any(sd => sd.ServiceType == typeof(TJob)))
+            {
+                services.AddTransient<TJob>();
+            }
+            var jobDetail = JobBuilder.Create(typeof(TJob)).WithIdentity(identity).WithDescription(description).Build();
+            services.AddSingleton<IScheduleJob>(provider => new ScheduleJob(jobDetail, new List<ITrigger>()));
+            return services;
+        }
+
+
+        public static IServiceCollection AddQuartzJobDetail(this IServiceCollection services, IJobDetail detail) 
+        {
+            services.AddSingleton<IScheduleJob>(provider => new ScheduleJob(detail, new List<ITrigger>()));
+            return services;
+        }
         public static IServiceCollection AddQuartzJob<TJob>(this IServiceCollection services) where TJob : class
         {
             services.AddTransient<TJob>();
@@ -49,6 +76,22 @@ namespace QuartzHostedService
         {
             return app.UseQuartzJob<TJob>(new TriggerBuilder[] { triggerBuilder_func() });
         }
+        public static IApplicationBuilder UseQuartzJob<TJob>(
+            this IApplicationBuilder app,string JobKey,
+            Func<TriggerBuilder> triggerBuilder_func)
+            where TJob : class, IJob
+        {
+            var _scheduleJobs = app.ApplicationServices.GetService<IEnumerable<IScheduleJob>>();
+            var job = from js in _scheduleJobs where js.JobDetail.JobType == typeof(TJob) && js.JobDetail.Key.Name == JobKey select js;
+            if (job.Any())
+            {
+                var scheduleJob = job.First();
+                var lstgs = (List<ITrigger>)scheduleJob.Triggers;
+                lstgs.Add(triggerBuilder_func().ForJob(scheduleJob.JobDetail).Build());
+            }
+            return app;
+        }
+
         public static IApplicationBuilder UseQuartzJob<TJob>(
                 this IApplicationBuilder app,
                 TriggerBuilder triggerBuilder)